| A | B |
|---|
| virus | nonliving disease-causing antigen |
| bacteria | prokaryotic cell that can cause disease |
| antibodies | chemicals the body produces to fight infection once introduced to the body |
| antibiotics | medicines that are chemicals that kill bacterial infections |
| vaccine | a weakened or dead virus introduced to the body to build immunity |
| interferon | a chemical that interferes with the virus's life cycle |
| AIDS | a viral infection |
| cold | a viral infection |
| flu | a viral infection |
| streptococcus | a bacterial infection |
| staphylococcus | a bacterial infection |
| pneumococcus | a bacterial infection |
