title: Evolution of the nucleoli during oogenesis in Xenopus laevis studied by electron microscopy.
mesh_terms: D000818:Animals; D001345:Autoradiography; D002466:Cell Nucleolus; D002467:Cell Nucleus; D002875:Chromosomes; D003593:Cytoplasm; D004247:DNA; D003609:Dactinomycin / Q000494:pharmacology; D005260:Female; D007814:Larva / Q000166:cytology; D008540:Meiosis; D008854:Microscopy, Electron; D010063:Ovum / Q000166:cytology* / Q000378:metabolism; D012335:RNA, Ribosomal / Q000096:biosynthesis; D012270:Ribosomes; D014316:Tritium; D014981:Xenopus
chemical_list: D012335:RNA, Ribosomal; D014316:Tritium; D003609:Dactinomycin; D004247:DNA