Foxp3^<b>+</b> regulatory T cells are increased during vitamin A deficiency.

<p>Flow cytometric analysis of intracellular nuclear Foxp3 staining on cells harvested from the liver (<b>A</b>), colon (<b>B</b>) and the mesenteric lymph nodes (<b>C</b>). Representative contour plots are gated on live CD4⁺ T cells. n = 3–5 mice per group. Error bars illustrate SEM; *p<0.05, #p<0.001. <a href="http://www.plospathogens.org/article/info:doi/10.1371/journal.ppat.1002883#s2" target="_blank">Results</a> are representative of three independent experiments.