Immune System Crossword

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Across
  1. 2. Proteins made by B cells to fight pathogens
  2. 6. Foreign substances that triggers immunity
  3. 7. General response that acts quickly
  4. 8. Cells that remember past infections
  5. 10. Part of adaptive system
  6. 11. Disease-causing organism
Down
  1. 1. When blood vessels widen
  2. 3. System that carries immune cells through body
  3. 4. "Killer" T cells that destroy infected cells
  4. 5. Cells that of engulfing pathogens
  5. 6. Type of immunity in the 3rd line of defense
  6. 9. Part of innate system