history defonitions crossword

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