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AIDS a disease that causes a severe loss of T-cells in the blood and opens the organism to infections
HIV a disease that changes the immune system by turning T-cells into more copies of its self and makes the host more vulnerable to infections
allergy a body's immune response to a certain substance
antibiotic a medicine that kills microorganisms
antibody a protein produced by plasma cells and is used by the immune system to fight pathogens
antigen a foreign substance that causes an immune response to fight pathogens
cancer disease where there is abnormal division of cells
disease disorder of function or structure in an organism that gives symptoms and effects in one area
histamine compound that is released by cells when there is an allergic reaction
pathogen a microorganism that can cause disease such as a bacterium or a virus
tumor a swelling in a part of a body caused by cancer
vaccination administration of a weak pathogen so that the body can make antibodies
white blood cells cells that protect the organism from infectious disease and foreign invaders
Created by: panda2003