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Macrophages and Dendritic Cells

  • Secrete soluble proteins that activate T cells

  • Activated T cells in turn release chemicals that:

    • Speed up the maturation and mobilization of DCs

    • Activate macrophages to become killer

macrophages, which are insatiable phagocytes that secrete bactericidal chemicals

  • Macrophages remain in lymphoid organs

  • T cells circulate and use CAMs as homing signals

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

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