title: Stem cells remember their grade.
abstract: The stem cell state is understood based on what cells do in performance assays, crude measures of a highly refined state. In this issue of Cell Stem Cell, Dykstra et al. (2007) reveal stem cell gradation and the extent to which that gradation is retained in stem cell daughters of hematopoietic stem cells.
authors: Center for Regenerative Medicine, Massachusetts General Hospital, Harvard Stem Cell Institute, Boston, MA 02114, USA.
authors: Cristina
authors: C
authors: Lo Celso
authors: David T
authors: DT
authors: Scadden
mesh_terms: D053687:Adult Stem Cells / Q000637:transplantation; D000818:Animals; D002454:Cell Differentiation / Q000502:physiology; D006412:Hematopoietic Stem Cells / Q000166:cytology*; D051379:Mice