| A | B |
|---|
| Pathogen | An organism, virus, or protein that causes disease |
| Immune System | Made up of tissues and specialized white blood cells that recognize and attack foreign substances in the body |
| Macrophage | White blood cell that destroys pathogens by engulfing and digesting them |
| T Cell | Coordinate the body's immune response or attack infected cells |
| B Cell | Make antibodies that attach to specific antigens |
| Antibody | Specialized protein that binds to a specific antigen to tag it for destruction |
| Immunity | The ability to resist or recover from an infectious disease |
| Vaccine | Substance prepared from killed or weakened pathogens that is introduced into the body to produce immunity |
| Noninfectious Disease | Diseases that are caused by hereditary or environmental factors |
| Infectious Disease | Disease that is caused by a pathogen |
| Antibiotic | Medicine used to kill or slow the growth of bacteria and other microorganisms |
| Antiviral Drug | A drug that destroys viruses or prevents their replication |
