history of medicine

2. medicines that treat infections by killing bacteria
3. a heart monitor invented by willem einthoven in the early 1900's
6. an unpleasant or unhealthy smell or vapour
9. to give a weak form of a disease to a person or animal, usually by injection, as a protection against that disease
10. four humours the belief that the substances that make up the human body are: black bile yellow bile blood and phlegm
11. the romans built these to transport fresh water to highly populated areas
12. organism an organism that can be seen only through a microscope . examples include bacteria, protozoa, algae and fungi

1. a substance that stops or slows down the growth of micro organisms
4. heating liquid or food to kill micro organisms
5. protected against/not affected by a disease
7. scan a powerful xray that provides a cross section of the human body invented in 1972
8. a substance used to stimulate the production of antibodies and provide immunity against a disease