title: Polycomb repression under the skin.
abstract: Polycomb group proteins control a hierarchy of gene expression during the differentiation of stem cells. In this issue, Ezhkova et al. (2009) show that repression mediated by Polycomb proteins controls the timing of differentiation of precursor cells of the epidermal lineage.
authors.affiliation: Department of Molecular Biology & Biochemistry, Rutgers University, Piscataway, NJ 08854, USA. pirrotta@dls.rutgers.edu
authors.forename: Vincenzo
authors.initials: V
authors.lastname: Pirrotta
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D018507:Gene Expression Regulation, Developmental; D008954:Models, Biological; D063146:Polycomb-Group Proteins; D012097:Repressor Proteins / Q000378:metabolism*; D012867:Skin / Q000166:cytology* / Q000196:embryology / Q000378:metabolism
chemical_list: D063146:Polycomb-Group Proteins; D012097:Repressor Proteins