title: Eat your carrots! T cells are RARing to go.
abstract: In this issue of Immunity, Hall et al. (2011) show that vitamin A and its metabolites play a central role in regulating adaptive immunity by promoting the development of both inflammatory and regulatory T cell responses.
authors: Department of Immunology, The University of Texas Southwestern Medical Center at Dallas, 5323 Harry Hines Boulevard, Dallas, Texas 75390, USA.
authors: Shipra
authors: S
authors: Vaishnava
authors: Lora V
authors: LV
authors: Hooper