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