title: The evolving concept of a stem cell: entity or function?
authors: Department of Molecular Pharmacology, Stanford University School of Medicine, Stanford, CA 94305, USA. hblau@stanford.edu
authors: H M
authors: HM
authors: Blau
authors: T R
authors: TR
authors: Brazelton
authors: J M
authors: JM
authors: Weimann
mesh_terms: D000818:Animals; D002454:Cell Differentiation / Q000502:physiology*; D019070:Cell Lineage; D002465:Cell Movement / Q000502:physiology; D002469:Cell Separation; D004622:Embryo, Mammalian / Q000166:cytology; D006133:Growth Substances / Q000378:metabolism; D006412:Hematopoietic Stem Cells / Q000166:cytology / Q000502:physiology; D006801:Humans; D018482:Muscle, Skeletal / Q000166:cytology / Q000502:physiology; D009474:Neurons / Q000166:cytology / Q000502:physiology; D009928:Organ Specificity; D013234:Stem Cells / Q000166:cytology / Q000502:physiology*
chemical_list: D006133:Growth Substances