definitions

3. A substance used to stimulate the production of antibodies and provide immunity against a disease
9. A powerful Xray that provides a cross-section of the human body invented in 1972
10. An unpleasant or unhealthy smell or vapor
11. Protected against, not affected by a disease
12. Medicines that treat infections by killing bacteria.

1. A heart monitor invented by Willem Einthoven in the early 1900’s
2. The belief that the substances that make up the human body are: black bile, yellow bile, blood, and phlegm.
4. The Romans built these to transport fresh water to highly populated areas.
5. An organism that can be seen only through a microscope. Examples include bacteria, protozoa, algae, and fungi
6. Heating liquid or food to kill microorganisms
7. To give a weak form of a disease to a person or animal, usually by injection, as a protection against that disease
8. A substance that stops or slows down the growth of microorganisms