Across
- 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
Down
- 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