The Immune System - 8th

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Across
  1. 2. immune system cells that recognize invaders
  2. 3. help develop immunity to disease
  3. 5. layer of skin
  4. 9. two types; B-cells & T-cells
  5. 10. organ where white blood cells mature
Down
  1. 1. abnormal condition the effects the body
  2. 4. system that helps fight pathogens & disease
  3. 6. small hair like structures found in the lungs
  4. 7. fluid membrane in the throat, nose, and mouth
  5. 8. like spit