title: Conservation of the structure of ribosomal RNA during evolution.
mesh_terms: D000818:Animals; D001001:Anura; D001407:Bacillus; D001412:Bacillus subtilis; D005075:Biological Evolution; D010856:Columbidae; D004586:Electrophoresis; D004589:Electrophoresis, Disc; D004926:Escherichia coli; D051379:Mice; D012313:RNA / Q000302:isolation & purification; D011817:Rabbits; D051381:Rats; D012260:Ribonucleases / Q000494:pharmacology; D012270:Ribosomes; D012440:Saccharomyces; D013045:Species Specificity
chemical_list: D012313:RNA; D012260:Ribonucleases