title: Skeletal muscle sings a choral stem cell lullaby.
abstract: Constraint of stem cell number in skeletal muscle is investigated by Abou-Khalil et al. (2009), in this issue of Cell Stem Cell. Their results attribute it both to autocrine positive feedback and to paracrine signals from the surrounding cellular community.
authors.affiliation: Center for Genetic Medicine, Children's National Medical Center, Washington, D.C. 20010, USA.
authors.forename: Stephanie
authors.initials: S
authors.lastname: Duguez
authors.forename: Terry
authors.initials: T
authors.lastname: Partridge
mesh_terms: D042683:Angiopoietin-1 / Q000378:metabolism / Q000494:pharmacology; D000818:Animals; D019898:Autocrine Communication / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D006801:Humans; D051379:Mice; D019899:Paracrine Communication / Q000187:drug effects; D042787:Receptor, TIE-2 / Q000378:metabolism; D032496:Satellite Cells, Skeletal Muscle / Q000166:cytology* / Q000187:drug effects / Q000201:enzymology / Q000378:metabolism*; D013234:Stem Cells / Q000166:cytology* / Q000187:drug effects / Q000378:metabolism
chemical_list: D042683:Angiopoietin-1; D042787:Receptor, TIE-2