title: Discrete stem cells: subsets or a continuum?
authors.forename: Mark A
authors.initials: MA
authors.lastname: Kirkland
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Quesenberry
authors.forename: Ingo
authors.initials: I
authors.lastname: Roeder
mesh_terms: D000818:Animals; D006412:Hematopoietic Stem Cells / Q000166:cytology / Q000502:physiology*; D007700:Kinetics; D051379:Mice; D008954:Models, Biological