| A | B |
| immunity | ability of the body to defend itself |
| phagocytosis | cell eating, engulf and digest microorganisms |
| natural killer cells | secretes a protein that destroys cell membranes |
| fever | raises body temperature to aid in the immune response |
| interferon | substances that stimulate immunity, intervere with viral multiplication |
| inflammation | the bodys response to isolate damaged tissue |
| hyperemia | increases the blood amount causing heat and redness |
| pyogenic bacteria | bacteria that produce pus |
| lymph | fluid that leaks from the capillary beds into tissues |
| lymphatic vessel | vessel that carries lymph to the heart |
| lymp nodes | filters within the lymphatic system that perform phagocytosis |
| lymphocytes | white blood cells that respond to bacteria, viruses, and foreign material in lymph |
| antigen | a foreign element that triggers the immune response |
| antibodies | proteins secreted by plasma cells that aid in defense against infectious agents |
| Tcell, T lymphocyte | provide cell-mediated immunity, made in thymus |
| epinephrine | a cortisone derivative used to reduce the immune response |
| autoimmune disorder | a disorder in which the body develops antibodies to its own tissue |
| AIDS | Acquired Immunodeficiency Syndrome |
| HIV | Human Immunodeficiency Virus |
| ELISA, Western Blot | tests used to diagnose HIV |