Immune System Crossword

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Across
  1. 2. General term for white blood cells
  2. 4. Body's response to injury or infection, often causing redness and swelling
  3. 5. Cell that engulfs and digests harmful foreign particles, bacteria, or dead cells
  4. 7. Microorganism that can cause disease
  5. 10. The body's ability to resist infection or toxins
  6. 12. A substance that triggers an immune response
  7. 13. A type of lymphocyte that helps the immune system identify pathogens
  8. 14. Protein produced by the immune system to neutralize pathogens
Down
  1. 1. Protein involved in cell signaling during immune responses
  2. 2. Type of white blood cell involved in immune response
  3. 3. Microscopic agent that invades living cells to reproduce
  4. 6. Condition where the immune system attacks the body's own cells
  5. 8. Substance that stimulates immunity to a disease
  6. 9. Large cell that engulfs and digests pathogens
  7. 11. Single-celled organisms, some of which can cause infection