Immune System

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Across
  1. 2. creates environment where bacteria can't gain entry
  2. 8. chemicals produced when tissues are injured
  3. 9. part of immune system that attacks unrecognized cells
  4. 11. part of immune system that kills specific cells
  5. 12. act as traps for pathogens to fight infection
  6. 13. screens t cells coming from bone marrow
Down
  1. 1. released to travel into tissues to fight pathogens
  2. 3. found in nasopharynx acts a first line of defense
  3. 4. a response caused by injury to tissues
  4. 5. old and dying blood cells get filtered out here
  5. 6. makes all the main immune cells in body
  6. 7. found in oropharynx fights pathogens entering nose/mouth
  7. 10. recognized infected or damages cells in the body