Across
- 4. A substance used to stimulate the production of antibodies an provide immunity against a disease
- 9. A substance that stops or slows down the growth of microorganisms
- 10. An organism that can be seen only through a microscope. Examples include bacteria, protozoa, algae and fungi
- 12. A medicine used to treat or kill bacteria
Down
- 1. Heating liquid or food to kill microorganisms
- 2. The Romans built these to transport fresh water to highly populated areas
- 3. A heart monitor invented by Willem Einthoven in the early 1900's
- 5. To give a weak form of a disease to a person or animal, usually by injection, a protection against that disease
- 6. four humours The belief that the substances that make up the human body are: black bile, yellow bile, blood and phlegm
- 7. scan A powerful Xray that provides a cross-section of the human body invented in 1972
- 8. An unpleasant for unhealthy smell or vapour
- 11. Protected against, not affected by a disease