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Genus	Species
Annwoodia	2
Candidatus Methylophosphatis	2
Candidatus Methylopumilus	7
Candidatus Nitricoxidireducens	1
Candidatus Nitricoxidivorans	1
Candidatus Nitrotoga	14
Denitratisoma	13
Ferrigenium	5
Ferriphaselus	3
Gallionella	48
Georgfuchsia	4
Methylobacillus	56
Methylophilus	74
Methyloradius	2
Methylotenera	17
Methyloversatilis	22
Methylovorus	11
Nitrosomonas	214
Nitrosospira	169
Nitrosovibrio	11
Novimethylophilus	2
Parasulfuritortus	3
Pseudomethylobacillus	1
Rugosibacter	3
Sideroxyarcus	2
Sideroxydans	11
Spirillum	13
Sterolibacterium	6
Sulfuricella	5
Sulfuricystis	2
Sulfuriferula	10
Sulfurimicrobium	3
Sulfurirhabdus	3
Sulfurisoma	3
Sulfuritalea	3
Sulfuritortus	3
Thiobacillus	86
Usitatibacter	4