Across
- 2. preparations of killed or weakened germs
- 4. is the body's sensitivity to certain substances
- 5. result of pathogens invading the body, multiplying, and harming some of your body's cell
- 6. able to spread to others by direct or indirect contact
- 8. white blood cells that attack pathogens
- 11. is a chronic breathing disease caused by allergies, physical exertion, air pollution, or other factors
- 14. is a group of cells, tissues, and organs that fight disease
- 16. is a disease that can be spread
- 17. disease-causing germs
- 18. is a disease that prevents the body from using the sugars and starches in food for energy
Down
- 1. disease caused by abnormal cells that grow out of control
- 3. is a disease that does not spread
- 4. chemicals produced specifically to fight a particular invading substance
- 7. substance that causes an allergic reaction
- 9. song-lasting
- 10. is an unhealthy condition of the body
- 11. is an HIV infection combined with severe immune system problems
- 12. a hormone produced by the pancreas that normally moves sugars into cells
- 13. the virus that causes AIDS
- 15. resistance to infection
- 19. masses of abnormal cells