Definitions

4. To give a weak form of a disease to a person or animal, usually by injection, as a protection against that disease
9. The belief that the substances that make up the human body are: black bile, yellow bile, blood, and phlegm.
10. An unpleasant or unhealthy smell or vapour.
11. Protected against, not affected by a disease
12. Heating liquid or food to micro-organisms

1. A heart monitor invented by Willem Einthoven in the early 1900s
2. A powerful Xray that provides a cross-section of the human body invented in 1972
3. A substance used to stimulate the production of antibodies substance and provide immunity against a disease
5. An organism that can be seen only through a microscope. Examples include bacteria, protozoa, algae, and fungi.
6. The Romans built these to transport fresh water to highly populated areas.
7. medicines that treat infections by killing bacteria.
8. A substance that stops or slows down the growth of microorganisms