History

2. Medicines that treat infections by killing bacteria
7. A heart monitor invented by Willem Einthoven in the early 1900’s
8. A powerful Xray that provides a cross-section of the human body invented in 1972
9. The belief that the substances that make up the human body are: black bile, yellow bile, blood, and phlegm
10. An organism that can be seen only through a microscope. Examples include bacteria, protozoa, algae, and fungi
11. A substance used to stimulate the production of antibodies and provide immunity against a disease

1. A substance that stops or slows down the growth of microorganisms
3. To give a weak form of a disease to a person or animal, usually by injection, as a protection against that diseas
4. Protected against, not affected by a disease
5. The Romans built these to transport fresh water to highly populated areas
6. Heating liquid or food to kill microorganisms
10. .An unpleasant or unhealthy smell or vapour.