Ch. 12 crossword

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Across
  1. 2. These cells prowl around the body looking for MHC-1 lacking cells
  2. 5. PRRs are how these defense cells recognize pathogens
  3. 6. These are released by macrophages and neutrophils to promote blood flow to injured site
  4. 9. Invertebrates rely on their _____ exoskeletons for protection
  5. 11. This type of immunity involves memory-based defense
  6. 12. These receptors are found on innate immune cells
  7. 13. _____ cells release histamine which causes blood vessels to dilate
  8. 14. These cells are considered the first responders to infection
Down
  1. 1. Macrophages found throughout the body originate from _______
  2. 3. These cells rise in response to allergies or helminths
  3. 4. These cells stimulate adaptive immunity in cells contacting the environment
  4. 7. These are found on pathogens that interact with PRRs
  5. 8. All animals have what type of immunity?
  6. 9. This host-evasion mechanism produced by bacteria keep the pathogen safe when digested
  7. 10. shock This condition has a 40% average mortality rate