Brown, D D The genes for ribosomal RNA and their transcription during amphibian development. [electronic resource] - Current topics in developmental biology 1967 - 47-73 p. digital Publication Type: Journal Article; Review ISSN: 0070-2153 Standard No.: 10.1016/s0070-2153(08)60283-5 doi Subjects--Topical Terms: Amphibians--embryologyAnimalsCell Nucleolus--metabolismCentrifugation, Density GradientEmbryo, Nonmammalian--metabolismFemaleGenesGenetic CodeMutationNucleic Acid HybridizationNucleoproteins--biosynthesisOvum--metabolismRNA, Ribosomal--analysisRibosomes--metabolismXenopus