CD25+CD4+T cells in human cord blood: an immunoregulatory subset with naive phenotype and specific expression of forkhead box p3 (Foxp3) gene - Takahata, Y; Nomura, A; Takada, H; Ohga, S; Furuno, K; Hikino, S; Nakayama, H; Sakaguchi, S; Hara, T (Exp Hematol, 2004)