Across
- 1. An unpleasant or unhealthy smell or vapour.
- 4. A heart monitor invented by Willem Einthoven in the early 1900s
- 6. To give a weak form of a disease to a person or animal, usually by injection, as a protection against that disease
- 8. The Romans built these to transport freshwater to highly populated areas.
- 9. a medicine that inhibits the growth of or destroys microorganisms
- 11. scan a procedure that uses a computer linked to an x-ray machine to make a series of detailed pictures of ares inside the body
- 12. Protected against, not affected by a disease
Down
- 2. A substance that stops or slows down the growth of microorganisms
- 3. An organism that can be seen only through a microscope. Examples include bacteria, protozoa, algae, and fungi.
- 5. Heating liquid or food to kill microorganisms
- 7. A substance used to stimulate the production of antibodies and provide immunity against a disease
- 10. four humors The belief that the substances that make up the human body are: black bile, yellow bile, blood, and phlegm.