title: Fine structure of ribosomal RNA. III. Location of evolutionarily conserved regions within ribosomal DNA.
mesh_terms: D000818:Animals; D005075:Biological Evolution; D002874:Chromosome Mapping; D004247:DNA; D004262:DNA Restriction Enzymes; D004023:Dictyostelium; D004926:Escherichia coli; D005815:Genetic Code; D009693:Nucleic Acid Hybridization; D010957:Plasmids; D012335:RNA, Ribosomal; D012441:Saccharomyces cerevisiae; D014981:Xenopus
chemical_list: D012335:RNA, Ribosomal; D004247:DNA; D004262:DNA Restriction Enzymes