title: Microbial ecology and evolution: a ribosomal RNA approach.
mesh_terms: D001419:Bacteria / Q000145:classification* / Q000235:genetics; D001483:Base Sequence; D002874:Chromosome Mapping; D004274:DNA, Recombinant; D009693:Nucleic Acid Hybridization; D010802:Phylogeny; D012329:RNA, Bacterial / Q000032:analysis*; D012335:RNA, Ribosomal / Q000032:analysis*
chemical_list: D004274:DNA, Recombinant; D012329:RNA, Bacterial; D012335:RNA, Ribosomal