title: Localization of genes for ribosomal RNA in the nuclei of Oxytricha fallax.
mesh_terms: D000818:Animals; D002467:Cell Nucleus / Q000648:ultrastructure*; D002874:Chromosome Mapping; D004247:DNA / Q000235:genetics; D056890:Eukaryota / Q000235:genetics*; D005796:Genes; D009693:Nucleic Acid Hybridization; D012313:RNA / Q000096:biosynthesis; D012335:RNA, Ribosomal / Q000235:genetics*
chemical_list: D012335:RNA, Ribosomal; D012313:RNA; D004247:DNA