title: Ribosomal DNA in Drosophila melanogaster. I. Isolation and characterization of cloned fragments.
mesh_terms: D001483:Base Sequence; D004247:DNA / Q000302:isolation & purification*; D004274:DNA, Recombinant; D004331:Drosophila melanogaster / Q000235:genetics; D004587:Electrophoresis, Agar Gel; D005796:Genes; D008854:Microscopy, Electron; D009693:Nucleic Acid Hybridization; D012270:Ribosomes / Q000032:analysis*
chemical_list: D004274:DNA, Recombinant; D004247:DNA