| A | B |
|---|
| disease | change that disrupts body function |
| pathogen | disease-causing agents |
| germ theory of disease | infectious diseases are caused by germs |
| koch's postulates | guidelines used to identify microorganisms |
| toxin | poisons that produce illness |
| vector | animals that carry diseases from person to person |
| antibiotic | compounds that kill bacteria |
| inflammatory response | nonspecific defense reaction to tissue damage |
| fever | elevated body temperature |
| interferon | group of proteins that resist viruses |
| immune response | specific defense that attacks disease-causing agent |
| antigen | substance that triggers immune response |
| humoral immunity | immunity found in body fluids |
| antibody | protein that helps destroy pathogens |
| cell-mediated immunity | immune response in which T cells attack antigen-bearing cells directly |
| permanent immunity | people who have survived exposure to a disease never get it again |
| vaccination | injection of mild pathogen to build immunity |
| active immunity | immunity produced by a vaccine |
| allergy | overreaction of the immune system when antigens bind to mast cells |
| histamine | chemical released by mast cells that increase the flow of blood & fluids to the surrounding area |
| asthma | allergic reaction that reduces the size of air passages |
| tumor | Mass of growing tissue |
| malignant | cancerous tumors that can invade & destroy tissue |
| metastasis | Spread of a cancerous tumor beyond its original tissue |
| chemotherapy | use of a combination of chemicals to kill cancerous cells |
