medicine

4. Medicines that treat infections by killing bacteria
6. Heating liquid or food to kill microorganism
7. A substance used to stimulate the production of antibodies and provide immunity against a disease
9. An organism that can be seen only through a microscope. Examples include bacteria, protozoa, algae, and fungi.
11. The belief that the substances that make up the human body are: black bile, yellow bile, blood, and phlegm

1. A substance that stops or slows down the growth of microorganisms
2. An unpleasant or unhealthy smell or vapour.
3. A heart monitor invented by Willem Einthoven in the early 1900’s
4. The Romans built these to transport fresh water to highly populated areas
5. To give a weak form of a disease to a person or animal, usually by injection, as a protection against that disease
8. A powerful Xray that provides a cross-section of the human body invented in 1972
10. Protected against, not affected by a disease