Across
- 4. Something used to treat some types of bacteria
- 7. A group of spore-producing organisms
- 8. An infectous Microorganism
Down
- 1. tiny, single-celled living organisms
- 2. A substance to make you immune to a disease
- 3. An organism that can cause diseases
- 5. Being immune to a disease or pathogen
- 6. An organism which is microscopic