title: A profusion of progenitors.
authors.affiliation: Hematology Branch, National Heart, Lung and Blood Institute, 10 CRC, Room 3E-5330, 10 Center Drive, Bethesda, MD 20892-1202, USA. barrettjj@mail.nih.gov
authors.forename: John
authors.initials: J
authors.lastname: Barrett
mesh_terms: D000818:Animals; D064987:Cell- and Tissue-Based Therapy; D006801:Humans; D012038:Regeneration / Q000502:physiology; D013234:Stem Cells