title: The number and activity of ribosomal RNA genes in Xenopus laevis embryos carrying partial deletions in both nucleolar organizers.
mesh_terms: D000818:Animals; D001001:Anura; D002247:Carbon Isotopes; D002466:Cell Nucleolus; D004591:Electrophoresis, Polyacrylamide Gel; D004625:Embryo, Nonmammalian / Q000378:metabolism; D005260:Female; D005796:Genes; D005809:Genes, Regulator; D006151:Guanosine / Q000378:metabolism; D007700:Kinetics; D008297:Male; D009154:Mutation; D009693:Nucleic Acid Hybridization; D012335:RNA, Ribosomal / Q000096:biosynthesis*; D014158:Transcription, Genetic; D014316:Tritium; D014529:Uridine / Q000378:metabolism; D014981:Xenopus
chemical_list: D002247:Carbon Isotopes; D012335:RNA, Ribosomal; D014316:Tritium; D006151:Guanosine; D014529:Uridine