immune system

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Across
  1. 4. used to treat harmful bacteria
  2. 7. what is the first step of the immune response
  3. 8. Are composed of a weakened or dead pathogen that triggers our white blood cells to produce antibodies to fight a specific pathogen
  4. 9. The antibodies must fit perfectly with the ___on a pathogen
  5. 10. White blood cells are found in the ____
  6. 11. how many steps in the immune response
Down
  1. 1. What do white blood cells do to pathogens in the second step of the immune response
  2. 2. A bacteria or virus or fungi that can cause a disease
  3. 3. On the surface of a pathogen
  4. 5. Once you have been exposed to a pathogen, your white blood cells remember the antigens on the pathogen
  5. 6. What do white blood cell create in the 3rd step of the immune response