title: A cell-free assay system for the analysis of changes in RNA synthesis during the development of Xenopus laevis.
mesh_terms: D000818:Animals; D002467:Cell Nucleus / Q000378:metabolism*; D002474:Cell-Free System; D002478:Cells, Cultured; D012321:DNA-Directed RNA Polymerases / Q000378:metabolism; D005260:Female; D005306:Fertilization; D007700:Kinetics; D008274:Magnesium / Q000494:pharmacology; D009865:Oocytes / Q000378:metabolism*; D009994:Osmolar Concentration; D010063:Ovum / Q000378:metabolism*; D012313:RNA / Q000096:biosynthesis*; D014158:Transcription, Genetic; D014981:Xenopus
chemical_list: D012313:RNA; D012321:DNA-Directed RNA Polymerases; D008274:Magnesium