Across
- 1. Lines of defense:skin,tears,saliva-enzymes,mucus,cilia,gastric juices,shots,be in good shape
- 3. organism that can cause a disease
- 5. that achieved through some intervening medium, as prolongation of a communicable disease through the air
- 8. single-celled microorganism live everywhere and does not need a host.Some produce toxins and kill cells
- 9. substance used to stimulate the production of antibodies and provide immunity against one or several diseases, prepared from the causative agent of a disease, its products, or a synthetic substitute, treated to act as an antigen without inducing the disease
- 11. pathogen that multiplies in the body
- 12. fungus
- 13. B cells produce them for a specific invader
- 14. small hairlike organelles
- 15. 3 stages, a chronic bacterial disease that is contracted chiefly by infection during sexual intercourse, but also congenitally by infection of a developing fetus.
Down
- 2. cannot catch the specific disease. Immune system has built up a tolerance to the invader.
- 4. aquired immune deficiency syndrome
- 6. the contact of a healthy person with a person having a communicable disease, the disease being transmitted as a result
- 7. body’s own defense. Vaccines and shots can help this
- 9. pieces of genetic material surrounded by a protein coat, needs a host to survive and multiply
- 10. human immunodeficiency virus