modern medicine

4. medicines that treat infections by killing bacteria
5. of the four humours the belief that the substances that make up the human body are: black bile, yellow bile, blood and phlegm
7. an unpleasant or unhealthy smell or vapour
8. heating liquid or food to kill microorganisms
12. a powerful X-ray that provides a cross-section of the human body invented in 1972

1. to give a weak form of a disease to a person or animal, usually by injection, as a protection against that disease
2. a heart monitor invented by William Einthoven in the early 1900's
3. 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
9. protected against, not affected by a disease
10. a substance that stops or slows down the growth of microorganisms
11. a substance used to stimulate the production of antibodies and provide immunity against a disease