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J Invest Dermatol. 2009 Feb;129(2):302-8. doi: 10.1038/jid.2008.225. Epub 2008 Aug 14.

Resident and "inflammatory" dendritic cells in human skin.

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  • 1Laboratory for Investigative Dermatology, The Rockefeller University, New York, New York 10065, USA.


Dendritic cells (DCs) are a heterogeneous group of antigen-presenting leukocytes that are important in activation of both the innate and adaptive arms of the immune system. Although there are several different DC populations in the body, DCs are globally defined by their capacity for potent antigen presentation and naive T-cell activation. In noninflamed human skin during steady state, there are three main cutaneous DC populations: epidermal Langerhans cells, dermal myeloid DCs, and dermal plasmacytoid DCs. In psoriasis, a model for cutaneous inflammation, there is an additional population of myeloid dermal DCs--"inflammatory DCs"--which appears to be critical for disease pathogenesis.

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