Across
- 2. a substance used to stimulate immunity
- 3. a member of a large group of unicellular microorganisms
- 6. phylum or group of phyla that comprises the single-celled microscopic animals
- 7. an infective agent that typically consists of a nucleic acid molecule in a protein coat
- 9. the sudden or violent start of something
- 10. a microorganism, especially a bacterium causing disease or fermentation.
Down
- 1. any of a group of spore-producing organisms feeding on organic matter
- 4. the state of being exposed to contact with something.
- 5. a bacterium, virus, or other microorganism that can cause disease.
- 8. a widespread occurrence of an infectious disease