title: Synthesis of RNA by nuclei isolated from embryos of Xenopus laevis at different developmental stages.
mesh_terms: D000818:Animals; D002467:Cell Nucleus / Q000378:metabolism*; D004247:DNA / Q000378:metabolism; D012321:DNA-Directed RNA Polymerases / Q000494:pharmacology; D003609:Dactinomycin / Q000494:pharmacology; D003851:Deoxyribonucleases; D004926:Escherichia coli / Q000201:enzymology; D008099:Liver / Q000378:metabolism; D012313:RNA / Q000096:biosynthesis*; D012260:Ribonucleases; D013095:Spermidine / Q000494:pharmacology; D013997:Time Factors; D014316:Tritium; D014529:Uridine / Q000378:metabolism; D014981:Xenopus / Q000196:embryology*
chemical_list: D014316:Tritium; D003609:Dactinomycin; D012313:RNA; D004247:DNA; D012321:DNA-Directed RNA Polymerases; D003851:Deoxyribonucleases; D012260:Ribonucleases; D013095:Spermidine; D014529:Uridine