| A | B |
|---|
| AIDS | Acquired Immunodeficiency Syndrome; disease caused by HIV |
| antibody | protein made by the body that fights a certain disease |
| antigen | pieces of pathogens |
| bacteria | one-celled organism that has no true nucleus |
| immune/immunity | resistance of the body to infection by a disease causing agent |
| epidemic | an outbreak of a contagious disease that quickly spreads across a large area |
| fungi/fungus | single or multicellular organism that reproduces with spores |
| HIV | Human Immunodeficiency Virus; virus that infects the T-Helper cells |
| parasite | organism that feeds on cells, tissues or fluids of another organism |
| pandemic | world-wide epidemic |
