Key Facts About Adaptive Immunity

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Key Facts About Adaptive Immunity

  • Specific: Each immune response targets one specific antigen shape
  • Memory: Faster, stronger response upon re-exposure — the basis of vaccination
  • Two types of lymphocyte: B cells make antibodies; T cells coordinate the response and kill infected cells
  • Antibodies are proteins: Produced by plasma cells, shaped to fit one antigen
  • Antitoxins are antibodies: When the target is a toxin rather than a whole pathogen, antibodies are called antitoxins
  • Phagocytes still needed: Antibodies tag pathogens — phagocytes do the actual engulfing and destroying

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