IMMUZZLE

123456789
Across
  1. 2. White blood cell that engulfs and destroys pathogens.
  2. 3. Organ responsible for filtering and trapping antigens.
  3. 5. Process of introducing harmless antigens to stimulate an immune response.
  4. 7. Cells that directly attack infected or cancerous cells.
  5. 8. Substance that triggers an immune response.
  6. 9. First line of defense against pathogens.
Down
  1. 1. A type of white blood cell that produces antibodies.
  2. 4. Type of immunity transferred through breast milk.
  3. 6. Small proteins secreted by cells to signal immune responses.
  4. 8. Protein produced by B cells to neutralize pathogens.