title: Biologists question adult stem-cell versatility.
authors.forename: Natalie
authors.initials: N
authors.lastname: DeWitt
authors.forename: Jonathan
authors.initials: J
authors.lastname: Knight
mesh_terms: D000328:Adult; D002454:Cell Differentiation; D004622:Embryo, Mammalian / Q000166:cytology; D006801:Humans; D013234:Stem Cells