Across
- 1. An unpleasant or unhealthy smell or vapor
- 3. A powerful Xray providing a cross-section of the human body, invented in 1972
- 8. heating liquid or food to kill microorganisms
- 9. A heart monitor invented by Willem Einthoven in the early 1900s
- 10. Protected against, not affected by a disease
- 11. Stimulates the production of antibodies, providing immunity
- 12. A substance that stops or slows down the growth of microorganisms
Down
- 2. The Romans built these to transport fresh water to highly populated areas
- 4. black bile, yellow bile, blood, phlegm
- 5. To give a weak form of a disease by injection as protection
- 6. organism that can be seen only through a microscope eg bacteria or fungi
- 7. Medicines that treat infections by killing bacteria