Across
- 3. A heart monitor invented by Willem Einthoven in the early 1900s
- 4. An unpleasant or unhealthy smell or vapour
- 7. The Romans built these to transport freshwater to highly populated areas
- 9. A medicine used to treat or kill bacteria
- 10. The belief that the substances that make up the body are; black bile, yellow bile, blood and phlegm
- 11. A substance that stops or slows down the growth of microorganisms
- 12. Protected against, not affected by a disease
Down
- 1. A powerful x-ray that provides a cross-section of the human body, invented in 1972
- 2. A substance used to stimulate the production of antibodies and provide immunity against a disease
- 5. An organism that can be seen only through a microscope; examples include bacteria, protozoa, algae and fungi
- 6. Heating liquid or food to kill microorganisms
- 8. To give a weak form of a disease to a person or animal, usually by injection, as a protection against that disease