history

3. .An unpleasant or unhealthy smell or vapour.
6. An organism that can be seen only through a microscope. Examples include bacteria, protozoa, algae, and fungi.
8. four humors The belief that the substances that make up the human body are: black bile, yellow bile, blood, and phlegm.
9. Heating liquid or food to kill microorganisms
11. scanner A powerful Xray that provides a cross-section of the human body invented in 1972
12. A heart monitor invented by Willem Einthoven in the early 1900’s

1. Medicines that treat infections by killing bacteria.
2. The Romans built these to transport fresh water to highly populated areas.
4. A substance used to stimulate the production of antibodies and provide immunity against a disease
5. Protected against, not affected by a disease
7. A substance that stops or slows down the growth of microorganisms
10. To give a weak form of a disease to a person or animal, usually by injection, as a protection against that disease