title: Evolution of DNA base compositions in microorganisms.
mesh_terms: D000458:Cyanobacteria / Q000737:chemistry; D003597:Cytosine Nucleotides / Q000032:analysis; D004247:DNA / Q000032:analysis; D004269:DNA, Bacterial / Q000032:analysis*; D056890:Eukaryota / Q000737:chemistry; D005658:Fungi / Q000737:chemistry; D006150:Guanine Nucleotides / Q000032:analysis; D009711:Nucleotides / Q000032:analysis*
chemical_list: D003597:Cytosine Nucleotides; D004269:DNA, Bacterial; D006150:Guanine Nucleotides; D009711:Nucleotides; D004247:DNA