Immune System Crossword

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Across
  1. 1. an immune cells whose job is to engulf/eat a pathogen in order to kill it
  2. 4. an immune cell that kills pathogens through the use of perforins
  3. 7. proteins that kill pathogens by puncturing their cell membranes
  4. 9. the first time the body is infected by a pathogen
  5. 13. the body's earned ability to resist specific pathogens after encountering them previously
  6. 16. the main immune cell
  7. 18. where whiteblood cells form in the body
  8. 20. the first line of defnese
  9. 21. raising the body temperature in order to fight off infection
Down
  1. 2. the type of immune response that is specific to one pathogen
  2. 3. the type of immune response that is non-specific (responds to any pathogen)
  3. 5. a type of b cell that remembers how to make an antibody for a specific pathogen to prevent future infection
  4. 6. protein markers on the surface of a cell
  5. 8. the process a cell undergoes for cell death
  6. 10. keratinized layered physical barrier that keeps out most pathogens
  7. 11. proteins that fit like a puzzle piece to block antigens
  8. 12. anytime the body is infected by a pathogen again AFTER the initial infection
  9. 14. a nonspecific response to any tissue damage
  10. 15. a chemical that activates cytotoxic t cells and b cells
  11. 17. an immune cell that produces antibodies
  12. 19. a type of artificial immunity in which a weakened or dead version of the pathogen is injected into the patient