| A | B |
|---|
| antibody | protein produced by the immune system in response to an antigen |
| active immunity | immunity in which a person's own immune system responds to the presence of an antigen |
| antigen | the invading organism or substance that triggers the action of an antibody |
| diabetes mellitus | non-infectious disease in which the body either makes too little insulin or is unable to use the insulin that it does make |
| cancer | non-infectious disease in which the body's own cells multiply uncontrollably |
| immunity | resistance to a disease causing organism or harmful substance |
| passive immunity | immunity that is gotten from another source |
| inflammatory response | the body's second line of defense, in which white blood cells move from blood vessels into the tissues |
| vaccination | the process in which an antigen is deliberately introduced to stimulate the immune system |
| white blood cell | cell that defends the body against invading organisms |
| B cells | special white blood cells that make antibodies |
| infectious disease | disease transmitted by disease-causing microorganisms |
| noninfectious disease | disease not caused by disease-causing microorganisms |
| AIDS | disease in which certain cells of the immune system are killed by a virus called HIV |
