MEDICINE

4. An unpleasant or healthy smell or vapour
6. The Roman built these to transport fresh water to highly populated areas.
7. Medicines that treat infections by killing bacteria.
8. An organism that can be seen only through a microscope, example include, bacteria, protozoa, algae, and fungi.
9. The belief that the substances that make up the human body are: black bile, yellow bile, blood, and phlegm.
11. Heating liquid or food to kill microorganism.
12. A substance used to simulate the production of antibodies and provide immunity against a desease.

1. A powerful XRAY that provides a cross-section of the human body invented in 1972.
2. protected against, not affected by a disease.
3. A heart monitor invented by Willem Einthoven in the early 1900's.
5. A substance that stops or slows down the growth of microorganisms.
10. To give a weak form of a disease to a person or animal, usually by infection, as a protection against that disease.