title: Stability and switching in cellular differentiation. Introduction.
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D004330:Drosophila / Q000235:genetics; D006801:Humans; D009491:Neurospora / Q000235:genetics; D009928:Organ Specificity; D011506:Proteins / Q000235:genetics; D012333:RNA, Messenger / Q000235:genetics
chemical_list: D011506:Proteins; D012333:RNA, Messenger