Hygiene (2)

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 4. A small abnormal patch on or inside the body (6)
  2. 5. Immunogen consisting of a suspension of weakened or dead pathogenic cells injected in order (7)
  3. 7. A chemical substance derivable from a mold or bacterium that can kill microorganisms and cure (10)
  4. 10. Division of a usually ___ divided leaf (5)
  5. 11. A salt of hydrofluoric acid (8)
  6. 12. A distensible membranous sac (7)
  7. 13. The outer layer of the skin covering the exterior body surface of vertebrates (7)
  8. 15. The secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has (plural) (8)

Down

  1. 1. Tiny single-celled living things, some of which cause illness (8)
  2. 2. Any of various organs that synthesize substances needed by the body and release it through ducts (5)
  3. 3. An animal or plant that lives in or on a host (plural) (9)
  4. 6. A widespread outbreak of an infectious disease (8)
  5. 8. The invasion of the body by pathogenic microorganisms and their multiplication which can lead (9)
  6. 9. A close personal relationship that forms between people (7)
  7. 10. Any small opening in the skin or outer surface of an animal (plural) (5)
  8. 14. The oily secretion of the sebaceous glands (5)