Medical Terminology Chapter 6 – Flashcards

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lymph
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the fluid that removes cellular waste products, pathogens, and dead blood cells from the tissues
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lymphatic vessels and ducts
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the capillaries, vessels, and ducts that return lymph from the tissues to the venous bloodstream
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lymph nodes
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bean shaped structures of the lymphatic system where pathogens and other harmful substances are filtered from the lymph by specialized cells of the immune system
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tonsils and adenoids
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lymphoid structures of the lymphatic system that protect the entry to the respiratory system
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spleen
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a sac like mass of lymphoid tissue with protective roles in both the immune and lymphatic systems
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bone marrow
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produces lymphocytes which are specialized leukocytes
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lymphocytes
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specialized leukocytes that play important foles in the immune reactions
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thymus
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a gland located in the upper chest with specialized roles in both the lymphatic and immune systems
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anti
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against
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carcin/o
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cancerous
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immun/o
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immune, protection, safe
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lymph/o
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lymph, lymphatic tissue
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lymphaden/o
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lymph node or gland
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lymphangi/o
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lymph vessel
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neo, ne/o
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new, strange
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oma
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tumor, neoplasm
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onc/o
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tumor
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phag/o
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eat, swallow
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plasm
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formative material of cells
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sarc/o
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flesh, connective tissue
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splen/o
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spleen
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tic
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pertaining to
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tox/o
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poison, poisonous
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tonsill/o
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tonsils
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adenoid/o
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adenoids
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myel/o
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bone marrow
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lymphocyt/o
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lymphocytes
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thym/o
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thymus
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villi
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contains lacteals and blood vessels, lines the small intestine
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lacteals
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specialized structures of the lymphatic system that absorb those fats that cannot be transported by the bloodstream
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interstitial fluid
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plasma from arterial blood that flows out of arterioles and into the capillaries and then flows into the spaces between the cells of the tissues
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lymph
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clear watery fluid containing electrolytes and proteins
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lymphatic circulatory system
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sometimes referred to as the second circulatory system.
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lymphatic capillaries
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microscopic, blind-ended tubes located near the surface of the body with capillary walls that are only one cell in thickness
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lymphatic vessels
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located deeper within the tissues and have valves to prevent the backward flow of lymph
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right lymphatic duct
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collects lymph from the right side of the head and neck, the upper right quadrant of the body, and the right arm
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thoracic duct
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the largest lymphatic vessel in the body, collects lymph from the left side of the head and neck, the upper left quadrant of the trunk, the left arm, the entire lower portion of the trunk and both legs
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lymph node
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bean shaped, contains specialized lymphocytes that are capable of destroying pathogens
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cervical lymph nodes
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located along the sides of the neck
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axillary lymph nodes
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located under the arms in the area known as the armpits
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inguinal lymph nodes
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located in the inguinal area of the lower abdomen
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lymphocytes
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leukocytes that are formed in bone marrow as stem cells
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maturation
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process of becoming mature
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differentiation
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to be modified to perform a specific function
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natural killer cells
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play an important role in the killing of cancer cells and cells infected by viruses
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b cells
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specialized lymphocytes that produce antibodies
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plasma cells
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develop from b cells and secrete a large volume of antibodies coded to destroy specific antigens
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t cells
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originate from the thymus and play a central role in cell mediated immunity
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cytokines
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group of proteins released primarily by the t cells and act as intracellular signals to begin the immune response
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interferons
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produced in response to the presence of antigens, particularly viruses or tumor cells. activate the immune system, fight viruses by slowing or stopping their multiplication and signal other cells to increase their defenses
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interleukins
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play multiple roles in the immune system, including directing B and T cells to divide and proliferate
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lymphoid
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pertaining to the lymphatic system or resembling lymph or lymphatic tissue
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tonsils
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three masses of lymphoid tissue that form a protective ring around the back of the nose and upper throat. play an important role by preventing pathogens from entering the respiratory system when breathing through the nose and mouth
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adenoids
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aka nasopharyngeal tonsils. located in the nasopharynx
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palatine tonsils
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located on the left and right sides of the throat in the area that is visible at the back of the mouth
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palatine
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the hard and soft plates that from the roof of the mouth
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lingual tonsils
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located at the base of the tongue and are not readily visible
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lingual
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pertaining to the tongue
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thymus
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a mass of lymphoid tissue located above the heart, reaches its greatest size at puberty and becomes smaller with age. secretes a hormone that stimulates the maturation of lymphocytes into t cells.
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veriform appendix
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hangs from the lower portion of the cecum. its purpose is to play an important role in the immune system
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spleen
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sac like mass of lymphoid tissue located in the upper quadrant of the abdomen inferior to the diaphragm and posterior to the stomach. filters microorganisms and other foreign material from the blood. forms lymphocytes and monocytes. stores extra erythrocytes and maintains the appropriate balance between cells and the plasma of the blood
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hemolytic
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destroying worn out erythrocytes and releasing their hemoglobin for reuse
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pathogens
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disease producing microorganisms
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allergens
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substances that produce allergic reactions
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toxins
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poisonous or harmful substances
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malignant cells
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potentially life threatening cancer cells
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intact skin
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wraps the body in a physical barrier to prevent invading organisms from entering the body
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intact
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there are no cuts, scrapes, open sores, or breaks in the skin
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acid mantle
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covers the skin, makes it an inhospitable environment for most bacteria
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respiratory system
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traps breathed in foreign matter with nose hairs and the moist mucous membrane lining of the system
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digestive system
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uses the acids and enzymes produced by the stomach to destroy invaders that are swalloed or consumed with food
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lymphatic system
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work in specific ways to attack and destroy pathogens that have succeeded in entering the body
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antigen antibody reactions
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aka immune reaction, involved binding antigens to antibodies
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antigen
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any substance that the body regards as being foreign
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tolerance
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refers to an acquired unresponsiveness to a specific antigen
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antibody
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a disease fighting protein created by the immune system in response to the presence of a specific antigen
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immunoglobulins
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bind with specific antigens in the antigen antibody response
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immunoglobulin g
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the most abundant class of antibodies, found in the blood serum and lymph. active against bacteria, fungi, viruses, and foreign particles
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immunoglobulin a
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class of antibodies produced predominantly against ingested antigens. found in body secretions such as saliva, sweat or tears and function to prevent the attachment of viruses and bacteria to the epithelial surfaces that line most organisms
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immunoglobulin m
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the class of antibodies that are found in circulating body fluids. these are the first antibodies to appear in response to an initial exposure to an antigen
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immunoglobulin d
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the class of antibodies found only on the surfaces of b cells. important in b cell activation
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immunoglobulin e
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the class of antibodies produced in the lungs, skin, and mucous membranes. these antibodies are responsible for allergic reactions
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phagocytes
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specialized leukocytes that act as part of the antigen antibody reaction by destroying sunstances such as cell debris, dust, pollen, and pathogens by the process of phagocytosis
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phagocytosis
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the process of destroying pathogens by surrounding and swallowing them
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monocytes
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leukocytes that provide immunological defenses against many infectious organsisms
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macrophage
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a type of leukocyte that surrounds and kills invading cells
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dendritic cells
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specialized leukocytes that patrol the body searching for antigens that produce infections
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the complement system
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a group of proteins that normally circulate in the blood in an inactive form. when needed these cells complement the ability of antibodies to ward off pathogens by combining with them to dissolve and remove pathogenic bacteria and other foreign cells
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complement
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to complete or make whole
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immunity
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state of being resistant to a specific disease
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natural immunity
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passive immunity, resistance to a disease present without the administration of an antigen or exposure to a disease
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acquired immunity
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obtained by having had a contagious disease
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vaccinated
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provides protection against a contagious disease
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vaccine
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preparation containing an antigen consisting of whole or partial disease causing organisms which have been killed or weakened
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allergist
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specializes in diagnosing and treating conditions of altered immunologic reactivity such as allergic reactions
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immunologist
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specializes in diagnosing and treating disorders of the immune system
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lymphologist
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a physician who specializes in diagnosing and treating disorders of the lymphatic system
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oncologist
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a physician specializing in the diagnosing and treatment of malignant disorders such as tumors and cancer
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lymphadentitis
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inflammation of the lymph nodes
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lymphadenopathy
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any disease process affecting a lymph node or nodes
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lymphangioma
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a benign tumor formed by an abnormal collection of lymphatic vessels due to a congenital malformation of the lymphatic system
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splenomegaly
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abnormal enlargement of the spleen
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splenorrhagia
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bleeding from the spleen
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tonsillitis
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inflammation of the tonsils
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tonsillectomy
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removal of the tonsills
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lymphoscintigraphy
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a diagnostic test that is performed to detect damage or malformations of the lymphatic vessels
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lymphedema
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swelling of the tissues due to an abnormal accumulation of lymph fluid within the tissues
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primary lymphedema
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hereditary condition of the lymphatic system that develops with swelling beginning in teh feet and progressing to the ankles and in an upward direction along the legs
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secondary lymphedema
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caused by damage to lymphatic vessels that is most frequently due to cancer treatment, surgery, trauma, or burns
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bioimpedence spectroscopy
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a noninvasive method of diagnosing lymphedema
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allergic reaction
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occurs when the bodys immune system reacts to a harmless allergen as if it were an invader
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allergy
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aka hypersensitivity, an overreaction by the body to a particular antigen
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allergen
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a substance that produces an allergic reaction in an individual
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localized allergic response
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aka cellular response, includes redness, itching, and burning where the skin has come in contact with an allergen
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systemic reaction/ anaphylaxis
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a severe response to an allergen
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scratch test
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a diagnostic test to identify commonly troublesome allergens such as tree pollen
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antihistamines
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medications administered to relieve or prevent the symptoms of hay fever
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histamine
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a substance produced by the body that causes the itching, sneezing, runny nose, and watery eyes of an allergic reaction
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autoimmune disorder
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any of a large group of diseases characterized by a condition in which the immune system produces antibodies against its own tissues, mistaking healthy cells, tissues, or organs for antigens
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immunodeficiency disorders
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occurs when the immune response is compromised
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compromised
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weakened or not functioning properly
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human immunodeficiency virus
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a blood borne infection in which the virus damages or kills the t cells of the immune system causing it to progressively fail, thus leaving the body at risk of developing many life threatening opportunistic infections
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opportunistic infection
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caused by a pathogen that does not normally produce an illness in healthy humans
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acquired immunodeficiency syndrome
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the most advanced and fatal stage of an HIV infection
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kaposi's sarcoma
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an example of an opportunistic infection that is frequently associated with HIV. Causes patches of abnormal tissue to grow under the skin
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ELISA
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a blood test used to screen for the presence of HIV antibodies
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western blot test
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a blood test that produces more accurate results than the ELISA test. performed to confirm the diagnosis when the results of the ELISA test are positive
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immunotherapy
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a disease treatment that involves either stimulating or repressing the immune resonse
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stimulate
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cause greater activity
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repress
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decrease or stop a normal response
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synthetic immunoglobulins
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used as a postexposure preventive measure against certain viruses
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postexposure
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the patient has been exposed to the virus
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synthetic interferon
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used in the treatment of multiple sclerosis, hepatitis c, and some cancers
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monoclonal antibodies
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any class of antibodies produced in the lab by identical offspring of a clone of specific cells
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monoclonal
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pertains to a single clone of cells
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clone
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an exact replica of a group of bacteria
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immunosuppression
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treatment to repress or interfere with the ability of the immune system to respond to stimulation by antigens
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immunosuppressant
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a substance that prevents or reduces the bodys normal immune response
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corticosteroid drug
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a hormone like preparation administered primarily as an anti-inflammatory and as an immunosuppressant
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cytotoxic drug
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a medication that kills or damages cells
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pathogen
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a microorganism that causes a disease in humans
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bacteria
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one celled microscopic organisms
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bacilli
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rod shaped spore forming bacteria
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anthrax
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a contagious disease that can be transmitted through livestock infected with bacillus anthracis
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rickettsia
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a small bacterium that lives in lice, fleas, ticks, and mites
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rocky mountain spotted fever
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caused by rickettsia that is transmitted to humans by the bite of an infected tick
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spirochetes
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long slender spiral shaped bacteria that have flexible walls and are capable of movement
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lyme disease
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caused by spirochetes belonging to the genus borrelia. can affect the joints, heart and nervous system caused by the bite of an infected deer tick
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staphylococci
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a group of about 30 species of bacteria that form irregular groups or clusters resembling grapes
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staphylococcus aureus
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a form of staphylococci that often infects wounds and causes serious problems such as toxic shock syndrome or food poisoning
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streptococci
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bacteria that form a chain. responsible for strep throat, meningitis
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septic shock
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a serious condition that occurs when an overwhelming bacterial infection affects the body
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antibiotic resistant bacteria
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occur when antibodies fail to kill all of the bacteria they target
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methicillin resistant staphylococcus aureus
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MRSA, one of several types of bacteria that are now resistant to most antibodies
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fungus
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a simple parasitic organism
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tinea pedis
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a fungal infection that develops between the toes, aka athletes foot
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yeast
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a type of fungus
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candidiasis
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aka yeast infection, infection that occurs on the skin or mucous membranes in warm, moist areas such as the vagina or mouth
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oral thrush
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a yeast infection of the mouth
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vaginal candidiasis
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yeast infection of the vagina
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parasite
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a plant or animal that lives on or within another living organism at the expense of that organism
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malaria
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is caused by a parasite that lives in certain mosquitoes and is transferred to humans by the bite of an infected mosquito
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toxoplasmosis
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example of a parasite that is most commonly transmitted from pets to humans by contact with contaminated animal feces
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west nile virus
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spread to humans by the bite of a mosquito. flu like symptoms
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lyme disease
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transmitted to humans by the bite of an infected blacklegged tick. symptoms include fever, headache, fatigue and a skin rash
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viruses
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very small infectious agents that live only by invading other cells
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influenza
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aka flu, is highly contagious viral respiratory infection that usually occurs in seasonal epidemics
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measles
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an acute highly contagious infection that is transmitted by respiratory droplets of the rubeola virus
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mumps
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an acute viral infection that is characterized by the swelling of the parotid glands, which are the salivary glands
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rubella
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a viral infection characterized by a low grade fever, swollen glands, inflamed eyes, and a fine pink rash
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measles, mumps, and rubella vaccination
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immunization can prevent these three viral conditions and should be administered early in childhood
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rabies
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an acute infection that is transmitted to humans through the bite or saliva of n infected animal
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cytomegalovirus
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found in most body fluids. usually the individual has no signs or symptoms of the infection but can be very dangerous
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silent infection
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an infection where an individual has no signs or symptoms of infection
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varicella
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chicken pox, caused by the herpes virus. characterized by a rash and fever
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herpes zoster
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aka shingles, an acute viral infection characterized by painful skin eruptions that follow the underlying route of an inflamed nerve
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infectious mononucleosis
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aka mono, caused by epsteinbarr virus. characterized by fever, sore throat, and enlarged lymph nodes
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antibiotics
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medications capable of inhibiting growth or killing pathogenic bacterial microorganisms
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bactericide
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a substance that causes the death of bacteria. example penicillin
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bacteriostatic agent
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slows or stops the growth of bacteria. example sulfonamide
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antifungal
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an agent that destroys or inhibits the growth of fungi. ex lotrimin
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antiviral drug
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used to treat viral infections or to provide temporary immunity
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oncology
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study of the prevention, causes, and treatment of tumors and cancer
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tumor
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aka neoplasm, an abnormal growth of body tissue
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benign tumor
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not a form of cancer and is no life threatening
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myoma
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a benign tumor made up of muscle tissue
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malignant tumor
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a form of cancer. it is capable of spreading to distant body sites
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myosarcoma
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a malignant tumor derived from muscle tissue
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angiogenesis
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the process through which a tumor supports its growth by creating its own blood supply
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antiangiogenesis
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is a form of treatment that disrupts the blood supply to the timor
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cancer
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a class of diseases characterized by the uncontrolled division of cells and the ability of these cells to invade other tissues
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metastasize
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the process by which cancer spreads from one place to another
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metastasis
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the new cancer site that results from the spreading process
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carcinoma
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a malignant tumor that occurs in epithelial tissue
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carcinoma in situ
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a malignant tumor in its original position that has not yet disturbed or invaded the surrounding tissues
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adenocarcinoma
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any one of a large group of carcinomas derived from glandular tissue
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sarcoma
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a malignant tumor that arises from connective tissues
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hard tissue sarcoma
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arise from bone or cartilage cancer
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osteosarcoma
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a hard tissue sarcoma that usually involves the upper shaft of the long bones, pelvis, or knee
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synovial sarcoma
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a tumor os the tissues surrounding a synovial joint such as the knees or elbows, a type of soft tissue sarcoma
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leukemia
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a type of liquid tissue sarcoma, is a cancer of the white blood forming cells in the bone marrow
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staging
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the process of classifying tumors by how far the disease has progressed, the potential for its responding to therapy, and the patients prognosis
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lymphoma
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a general term applied to malignancies affecting lymphoid tissues
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hodgkins lymphoma
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distinguished from other lymphomas by the presence of large cancerous lymphcytes known as reed sternberg cells
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non hodgkins lymphoma
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the term used to describe all other lymphomas
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breast cancer
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a carcinoma that develops from the cells of the breast and can spread to adjacent lymph nodes and other body sites
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ductal carcinoma in situ
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breast cancer at its earliest stage before the cancer has broken through the wall of the milk duct
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infiltrating ductal carcinoma
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starts in the milk duct, breaks through the wall of that duct and invades the fatty breast tissue
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infiltrating lobular carcinoma
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cancer that starts in the milk glands, breaks through the wall of the gland, and invades the fatty tissue of the breast
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inflammatory breast cancer
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a rare but aggressive form of breast cancer . grows rapidly and the symptoms include pain, rapid increase in the breast size, redness or rash on the breast and swelling of nearby lymph nodes
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stage 0
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cancer cells found only in one location
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stage I
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cancer cells have moved beyond the duct but have not yet reached the lymph nodes
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stage II
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cancer has increased in size and has reached axillary lymph nodes
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stage III
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cancer has spread to the cervical lymph nodes and the tissues surrounding the breasts
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stage IV
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cancer has spread to other organs
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breast self examination
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a self care procedure for the early detection of breast cancer
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professional palpation of the breast
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performed to feel the texture, size, and consistency of the breast
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mammography
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a radiographic examination of the breasts to detect the presence of tumors or precancerous cells
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ultrasound
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used as an initial follow up test when an abnormality is found by mammography
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needle breast biopsy
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a technique in which an x ray guided needle is used to remove small samples of tissue from the breast
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surgical biopsy
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the removal of a small peice of tissue for examination to confirm a diagnosis
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sentinel node biopsy
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a biopsy of the first lymph node to come into contact with cancer cells as they leave the organ or origination and start spreading into the rest of the body
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lymph node dissection
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a surgical procedure in which all of the lymph nodes in a major group are removed to determine or slow the spread of cancer in this area
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lumpectomy
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the surgical removal of only the cancerous tissue with the surrounding margin of normal tissus
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mastectomy
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the surgical removal of the entire breast and nipple
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mast
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breast
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radical mastectomy
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the surgical removal of an entire breast and many of the surrounding tissues
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modified radical mastectomy
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the surgical removal of the entire breast and all of the axillary lymph nodes under the adjacent arm
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immediate breast reconstruction
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begins during the same surgery as the mastectomy
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delayed breast reconstruction
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may be necessary if the surgery is followed by radiation treatment
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laser surgery
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targeted beams of light destroy cancer cells
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cryosurgery
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cancerous cells are frozen and destroyed
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chemotherapy
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the use of chemical agents and drugs in combinations selected to destroy malignant cells and tissues
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chemoprevention
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the use of natural or synthetic substances such as drugs or vitamins to reduce the risk of developing cancer or to reduce the chance the cancer will recur
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antineoplastic
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a medication that blocks the development, growth, or proliferation of malignant cells
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cytotoxic drugs
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used for both immunosuppression and chemotherapy
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radiation therapy
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used in the treatment of some cancers with the goal of destroying only the cancerous tissues
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brachytherapy
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the use of radioactive materials in contact with or implanted into the tissues to be treated
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teletherapy
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radiation therapy administered at a distance from the body
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targeted therapy
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developing form of anti cancer drug therapy that uses drugs or other substances to identify and attack specific cancer cells without harming normal cells
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adjuvant therapy
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performed to decrease the chances cancer will recur and intended to increase the effectiveness of treatment
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clinical trials
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involve testing new and promising cancer treatments that have not yet received food and drug administration approval on patients who agree to be part of the research
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