title: Number of ribosomal RNA cistrons in the marine mud snail Ilyanassa obsoleta.
mesh_terms: D000818:Animals; D003582:Cytogenetics; D004247:DNA / Q000032:analysis; D004171:Diploidy; D004589:Electrophoresis, Disc; D005260:Female; D007814:Larva; D008722:Methods; D009693:Nucleic Acid Hybridization; D012335:RNA, Ribosomal / Q000032:analysis*; D012908:Snails; D014316:Tritium
chemical_list: D012335:RNA, Ribosomal; D014316:Tritium; D004247:DNA