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8U4C5
Term | Definition |
---|---|
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 |