title: RNA polymerase sigma factors and cell-specific gene transcription in a simple developing organism.
authors.affiliation: Department of Molecular and Cellular Biology, Harvard University, Cambridge, Massachusetts, USA.
authors.forename: R
authors.initials: R
authors.lastname: Losick
mesh_terms: D001412:Bacillus subtilis / Q000235:genetics / Q000502:physiology / Q000648:ultrastructure; D012321:DNA-Directed RNA Polymerases / Q000235:genetics*; D008854:Microscopy, Electron; D012808:Sigma Factor / Q000235:genetics* / Q000378:metabolism; D013171:Spores, Bacterial / Q000235:genetics; D014158:Transcription, Genetic
chemical_list: D012808:Sigma Factor; D012321:DNA-Directed RNA Polymerases