T cell receptor stimulation-induced epigenetic changes and foxp3 expression are independent and complementary events required for treg cell development

N Ohkura, M Hamaguchi, H Morikawa, K Sugimura, A Tanaka, Y Ito, M Osaki, Y Tanaka, R Yamashita, N Nakano, J Huehn, H J Fehling, T Sparwasser, K Nakai, S Sakaguchi