The Immune System

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Across
  1. 2. cell fragments that are found in blood and help to form blood clots
  2. 6. Produces immune cells or lymphocytes
  3. 7. prevents bacteria and viruses from infecting the throat
  4. 8. cells that produce antibodies
  5. 10. produces blood cells and platelets
  6. 12. prevent the growth of harmful bacteria in the intestines
  7. 13. filters substances that travel through lymphatic fluid
  8. 14. Filters blood
Down
  1. 1. protective layer that lines body cavities
  2. 3. a blood protein produced to counteract a specific pathogen
  3. 4. tube that carries white blood cells and lymphatic fluid
  4. 5. prevents bacteria and viruses from infecting the lung
  5. 9. the type of blood cells that fight off infection
  6. 11. Houses beneficial gut flora