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. 2007 Aug 6;204(8):1737–1739. doi: 10.1084/jem.20071251

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Copyright © 2007, The Rockefeller University Press

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Figure 1. — RA promotes the differentiation of FoxP3⁺ T reg cells in the gut. Antigen from the gut lumen gains access to CD103⁺ gut-associated DCs. T cells that recognize antigen in the context of DC-produced RA and TGF-β up-regulate Foxp3 and become T reg cells.