title: An electron microscope heteroduplex study of the ribosomal DNAs of Xenopus laevis and Xenopus mulleri.
mesh_terms: D000818:Animals; D004247:DNA; D005260:Female; D005796:Genes; D008854:Microscopy, Electron; D008970:Molecular Weight; D009690:Nucleic Acid Conformation; D009693:Nucleic Acid Hybridization; D010053:Ovary / Q000032:analysis; D012335:RNA, Ribosomal; D012270:Ribosomes / Q000032:analysis*; D014981:Xenopus
chemical_list: D012335:RNA, Ribosomal; D004247:DNA