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8U4C5

TermDefinition
immune system the cells and tissues that recognize and attack foreign substances in the body
pathogen a bacterium, virus, or other microorganism that can cause disease
Macrophage an immune system cell that engulfs pathogens and other materials
T cells an immune system cell that coordinates the immune system and attacks many infected cells
B cells a white blood cell that makes antibodies
antibody a protein made by B cells that binds to a specific antigen
Antigen a substance that stimulate an immune response
lymphatic system a collection of organs whose primary function is to collect extracellular fluid and return it to the blood
Cancer tumor in which the cells begin dividing at an uncontrolled rate and become invasive
Created by: Ms. Greenup
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