Across
- 4. medicines that treat infections by killing bacteria
- 5. a heart monitor invented by William Einthoven in the early 1900's
- 6. heating liquid or food to kill microorganisms
- 8. an unpleasent or unhealthy smell or vapour
- 12. a powerful X-ray that provides a cross-section of the human body invented in 1972
Down
- 1. a substance used to stimulate the production of antibodies and provide immunity against a disease
- 2. the belief that the substances that make up the human body are: black bile, yellow bile, blood and phlegm
- 3. a organism that can only be seen under a microscope eg. bacteria and fungi
- 7. a substance that stops or slows down the growth of microorganisms
- 9. to give a weak form of a disease to a person or animal, usally by injection, as a protection against that disease
- 10. the romans built these to transport fresh water to highly populated areas
- 11. protected against, not affected by a disease