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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings - page 34 / 62

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Adaptive Immune Defenses

  • It has two separate but overlapping arms:

    • Humoral, or antibody-mediated immunity

      • Ab mediated immunity

      • Ab produced by lymphocytes and bind to bacteria, bacterial toxins, free viruses

      • Inactivates them and targets them for destruction by phagocytes or complement

    • Cellular, or cell-mediated immunity

      • No Abs, but rather lymphocytes alone defend the body

      • Targets virus or parasite infected tissue, cancer cells and cells from foreign grafts

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

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