Across
- 5. Used to kill bacteria
- 6. protected against a disease
- 9. Romana built these to transport water
- 10. unpleasant smell or vapour
- 12. a powerful x-ray made in 1972
Down
- 1. heating liquid to kill microorganisms
- 2. used to stimulate the production of antibodies
- 3. to give a weak form of a disease to for protection against it
- 4. slows the growth of microorganisms
- 7. a heart monitor
- 8. the belief the body is made up from
- 11. organism only seen under a microscope