Fig. 4: Immature Dendritic Cells Engulfing and Processing Microbes and
Carrying them to Regional Lymph Nodes, Part 1

The binding of microbial PAMPs to the PRRs of the immature dendritic cell activates that dendritic cell and promotes production of the chemokine receptor CCR7 that directs the dendritic cell into local lymphoid nodes. Following maturation, the dendritic cell can now present protein epitopes bound to MHC molecules to all the various naive T-lymphocytes passing through the lymphoid system.

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