What do antigens do?

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Tags

  1. #unique
  2. #antibodies
  3. #immune
  4. #found
  5. #bacterium
  6. #enters
  7. #against
  8. #antigen
  9. #surface
  10. #proteins
  11. #antigens
  12. #whooping
  13. #cough
  14. #system
  15. #different
  16. #example
  17. #produces
  18. #pathogen