title: RNA polymerase during early development in mouse embryo.
mesh_terms: D000818:Animals; D012321:DNA-Directed RNA Polymerases / Q000032:analysis*; D004622:Embryo, Mammalian / Q000201:enzymology* / Q000378:metabolism; D005260:Female; D051379:Mice / Q000196:embryology*; D012313:RNA / Q000096:biosynthesis; D013997:Time Factors; D014020:Tissue Extracts; D014316:Tritium; D014500:Uracil Nucleotides
chemical_list: D014020:Tissue Extracts; D014500:Uracil Nucleotides; D014316:Tritium; D012313:RNA; D012321:DNA-Directed RNA Polymerases