| A | B |
| pathogens | organisms that live on or in their host and gain nutrients from that host |
| inflammation | confines and destroys microbes and repairs tissues |
| fever | inhibits microbial growth and speeds up body reactions that aid in repair |
| active immunity | individual either possesses or forms his or her own antibodies within his or her own body |
| passive immunity | temporary form of immunity produced by the introduction of antibodies into an individual from another organism |
| vaccinations | injections that use weakened microbes or parts of microbes to stimulate the immune system to react |
| microbes | a microscopic organism, such as a bacteria and virus |
| allergy | an extreme body reaction to certain foreign substances |
| anti-histamine | stops the allergic reaction by blocking histamines |
| autoimmune disease | disease where the immune system attacks some of its own body cells |
| AIDS | auto-immune deficiency syndrome. A disease caused by the HIV virus which damages the immune system |
| HIV | human immunodeficiency virus that causes AIDS |
| transplant rejection | occurs when the immune system of the recipient of a transplant attacks the transplanted organ or tissue |
| lymph nodes | filter the lymphatic fluid and store special cells that can trap cancer cells or bacteria that are traveling through the body in the lymph fluid |