title: Differentiation and gene regulation.
mesh_terms: D000818:Animals; D001419:Bacteria / Q000235:genetics; D002454:Cell Differentiation; D004625:Embryo, Nonmammalian / Q000502:physiology; D005314:Embryonic and Fetal Development / Q000502:physiology; D005057:Eukaryotic Cells; D005786:Gene Expression Regulation; D006801:Humans; D018521:Plant Physiological Phenomena; D010944:Plants / Q000235:genetics; D011387:Prokaryotic Cells; D014158:Transcription, Genetic; D014780:Viruses / Q000235:genetics