title: The genes for ribosomal RNA and their transcription during amphibian development.
mesh_terms: D000663:Amphibians / Q000196:embryology* / Q000378:metabolism; D000818:Animals; D002466:Cell Nucleolus / Q000378:metabolism; D002499:Centrifugation, Density Gradient; D004625:Embryo, Nonmammalian / Q000378:metabolism*; D005260:Female; D005796:Genes; D005815:Genetic Code; D009154:Mutation; D009693:Nucleic Acid Hybridization; D009698:Nucleoproteins / Q000096:biosynthesis; D010063:Ovum / Q000378:metabolism; D012335:RNA, Ribosomal / Q000032:analysis / Q000096:biosynthesis*; D012270:Ribosomes / Q000378:metabolism; D014981:Xenopus
chemical_list: D009698:Nucleoproteins; D012335:RNA, Ribosomal