Localization of the ribosomal DNA complements in the nucleolar organizer region of Xenopus laevis.
D000818:Animals; D001001:Anura; D002247:Carbon Isotopes; D002466:Cell Nucleolus; D002499:Centrifugation, Density Gradient; D003582:Cytogenetics; D004247:DNA / Q000032:analysis*; D006824:Hybridization, Genetic; D012313:RNA / Q000032:analysis*; D012270:Ribosomes
D002247:Carbon Isotopes; D012313:RNA; D004247:DNA