CD127 expression inversely correlates with FoxP3 and suppressive function of human CD4+ T reg cells - Liu, W; Putnam, A L; Xu-Yu, Z; Szot, G L; Lee, M R; Zhu, S; Gottlieb, P A; Kapranov, P; Gingeras, T R; Fazekas de St Groth, B; Clayberger, C; Soper, D M; Ziegler, S F; Bluestone, J A (J Exp Med, 2006)