title: Stem cell concepts.
mesh_terms: D000818:Animals; D002453:Cell Cycle; D002454:Cell Differentiation; D002455:Cell Division; D002460:Cell Line; D002999:Clone Cells / Q000502:physiology*; D004777:Environment; D006412:Hematopoietic Stem Cells / Q000502:physiology*; D008938:Mitosis