What do you know about the immune system?

1234567
Across
  1. 5. Your body gets injected with at tiny amount of virus usually the virus is either killed or deactivated, but the immune system can still recognize it and creates antibodies for it.
  2. 7. Kill bacteria that live in the food you eat.
Down
  1. 1. When the body's immune system over react to certain cells in the body that are not a threat.
  2. 2. Cells that patrol your blood stream, hunting invaders.
  3. 3. In your nose traps many of the pathogens you inhale preventing you from getting to your blood stream.
  4. 4. A protein that binds with a molecule or antigen only on the invading germ.
  5. 6. A microorganism, another organism, a virus, or a protein that causes disease.
  6. 7. The outer layer that shields the body from germs.