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机译:Umbilical cord blood contains normal frequencies of cytotoxic T-lymphocyte precursors (ctlp) and helper T-lymphocyte precursors against noninherited maternal antigens and noninherited paternal antigens
Leiden University Hospital, Department of Hematology, Building 1: C2-R, P.O. Box 9600, NL-2300 RC Leiden, The Netherlands;