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  Abiotrophia 
 Abiotrophia defectiva 
 Acaricomes 
 Acaricomes phytoseiuli 
 Acetitomaculum 
 Acetitomaculum ruminis 
 Acetivibrio 
 Acetivibrio cellulolyticus 
 Acetivibrio ethanolgignens 
 Acetivibrio multivorans 
 Acetoanaerobium 
 Acetoanaerobium noterae 
 Acetobacter 
 Acetobacter aceti 
 Acetobacter cerevisiae 
 Acetobacter cibinongensis 
 Acetobacter estunensis 
 Acetobacter fabarum 
 Acetobacter ghanensis 
 Acetobacter indonesiensis 
 Acetobacter lovaniensis 
 Acetobacter malorum 
 Acetobacter nitrogenifigens 
 Acetobacter oeni 
 Acetobacter orientalis 
 Acetobacter orleanensis 
 Acetobacter pasteurianus 
 Acetobacter pornorurn 
 Acetobacter senegalensis 
 Acetobacter xylinus 
 Acetobacterium 
 Acetobacterium bakii 
 Acetobacterium carbinolicum 
 Acetobacterium dehalogenans 
 Acetobacterium fimetarium 
 Acetobacterium malicum 
 Acetobacterium paludosum 
 Acetobacterium tundrae 
 Acetobacterium wieringae 
 Acetobacterium woodii 
 Acetofilamentum 
 Acetofilamentum rigidum 
 Acetohalobium 
 Acetohalobium arabaticum 
 Acetomicrobium 
 Acetomicrobium faecale 
 Acetomicrobium flavidum 
 Acetonema 
 Acetonema longum 
 Acetothermus 
 Acetothermus paucivorans 
 Acholeplasma 
 Acholeplasma axanthum 
 Acholeplasma brassicae 
 Acholeplasma cavigenitalium 
 Acholeplasma equifetale 
 Acholeplasma granularum 
 Acholeplasma hippikon 
 Acholeplasma laidlawii 
 Acholeplasma modicum 
 Acholeplasma morum 
 Acholeplasma multilocale 
 Acholeplasma oculi 
 Acholeplasma palmae 
 Acholeplasma parvum 
 Acholeplasma pleciae 
 Acholeplasma vituli 
 Achromobacter 
 Achromobacter denitrificans 
 Achromobacter insolitus 
 Achromobacter piechaudii 
 Achromobacter ruhlandii 
 Achromobacter spanius 
 Acidaminobacter 
 Acidaminobacter hydrogenoformans 
  
 Acidaminococcus 
 Acidaminococcus fermentans 
 Acidaminococcus intestini 
 Acidicaldus 
 Acidicaldus organivorans 
 Acidimicrobium 
 Acidimicrobium ferrooxidans 
 Acidiphilium 
 Acidiphilium acidophilum 
 Acidiphilium angustum 
 Acidiphilium cryptum 
 Acidiphilium multivorum 
 Acidiphilium organovorum 
 Acidiphilium rubrum 
 Acidisoma 
 Acidisoma sibiricum 
 Acidisoma tundrae 
 Acidisphaera 
 Acidisphaera rubrifaciens 
 Acidithiobacillus 
 Acidithiobacillus albertensis 
 Acidithiobacillus caldus 
 Acidithiobacillus ferrooxidans 
 Acidithiobacillus thiooxidans 
 Acidobacterium 
 Acidobacterium capsulatum   | 
  
  Acidocella 
 Acidocella aminolytica 
 Acidocella facilis 
 Acidomonas  
 Acidomonas methanolica 
 Acidothermus 
 Acidothermus cellulolyticus 
 Acidovorax 
 Acidovorax anthurii 
 Acidovorax caeni 
 Acidovorax cattleyae 
 Acidovorax citrulli 
 Acidovorax defluvii 
 Acidovorax delafieldii 
 Acidovorax facilis 
 Acidovorax konjaci 
 Acidovorax temperans 
 Acidovorax valerianellae 
  
 Acinetobacter 
 Acinetobacter baumannii 
 Acinetobacter baylyi 
 Acinetobacter bouvetii 
 Acinetobacter calcoaceticus 
 Acinetobacter gerneri 
 Acinetobacter haemolyticus 
 Acinetobacter johnsonii 
 Acinetobacter junii 
 Acinetobacter lwoffi 
 Acinetobacter parvus 
 Acinetobacter radioresistens 
 Acinetobacter schindleri 
 Acinetobacter soli 
 Acinetobacter tandoii 
 Acinetobacter tjernbergiae 
 Acinetobacter towneri 
 Acinetobacter ursingii 
 Acinetobacter venetianus 
 Acrocarpospora 
 Acrocarpospora corrugata 
 Acrocarpospora macrocephala 
 Acrocarpospora pleiomorpha 
 Actibacter 
 Actibacter sediminis 
 Actinoalloteichus 
 Actinoalloteichus cyanogriseus 
 Actinoalloteichus hymeniacidonis 
 Actinoalloteichus spitiensis 
 Actinobaccillus 
 Actinobacillus capsulatus 
 Actinobacillus delphinicola 
 Actinobacillus hominis 
 Actinobacillus indolicus 
 Actinobacillus lignieresii 
 Actinobacillus minor 
 Actinobacillus muris 
 Actinobacillus pleuropneumoniae 
 Actinobacillus porcinus 
 Actinobacillus rossii 
 Actinobacillus scotiae 
 Actinobacillus seminis 
 Actinobacillus succinogenes 
 Actinobaccillus suis 
 Actinobacillus ureae 
 Actinobaculum 
 Actinobaculum massiliense 
 Actinobaculum schaalii 
 Actinobaculum suis 
 Actinomyces urinale 
 Actinocatenispora 
 Actinocatenispora rupis 
 Actinocatenispora thailandica 
 Actinocatenispora sera 
 Actinocorallia 
 Actinocorallia aurantiaca 
 Actinocorallia aurea 
 Actinocorallia cavernae 
 Actinocorallia glomerata 
 Actinocorallia herbida 
 Actinocorallia libanotica 
 Actinocorallia longicatena 
 Actinomadura 
 Actinomadura alba 
 Actinomadura atramentaria 
 Actinomadura bangladeshensis 
 Actinomadura catellatispora 
 Actinomadura chibensis 
 Actinomadura chokoriensis 
 Actinomadura citrea 
 Actinomadura coerulea 
 Actinomadura echinospora 
 Actinomadura fibrosa 
 Actinomadura formosensis 
 Actinomadura hibisca 
 Actinomadura kijaniata 
 Actinomadura latina 
 Actinomadura livida 
 Actinomadura luteofluorescens 
 Actinomadura macra 
 Actinomadura madurae 
 Actinomadura oligospora 
 Actinomadura pelletieri 
 Actinomadura rubrobrunea 
 Actinomadura rugatobispora 
 Actinomadura umbrina 
 Actinomadura verrucosospora 
 Actinomadura vinacea 
 Actinomadura viridilutea 
 Actinomadura viridis 
 Actinomadura yumaensis   | 
 Actinomyces 
 Actinomyces bovis 
 Actinomyces denticolens 
 Actinomyces europaeus 
 Actinomyces georgiae 
 Actinomyces gerencseriae 
 Actinomyces hordeovulneris 
 Actinomyces howellii 
 Actinomyces hyovaginalis 
 Actinomyces israelii 
 Actinomyces johnsonii 
 Actinomyces meyeri 
 Actinomyces naeslundii 
 Actinomyces neuii 
 Actinomyces odontolyticus 
 Actinomyces oris 
 Actinomyces radingae 
 Actinomyces slackii 
 Actinomyces turicensis 
 Actinomyces viscosus 
 Actinoplanes 
 Actinoplanes auranticolor 
 Actinoplanes brasiliensis 
 Actinoplanes consettensis 
 Actinoplanes deccanensis 
 Actinoplanes derwentensis 
 Actinoplanes digitatis 
 Actinoplanes durhamensis 
 Actinoplanes ferrugineus 
 Actinoplanes globisporus 
 Actinoplanes humidus 
 Actinoplanes italicus 
 Actinoplanes liguriensis 
 Actinoplanes lobatus 
 Actinoplanes missouriensis 
 Actinoplanes palleronii 
 Actinoplanes philippinensis 
 Actinoplanes rectilineatus 
 Actinoplanes regularis 
 Actinoplanes teichomyceticus 
 Actinoplanes utahensis 
 Actinopolyspora 
 Actinopolyspora halophila 
 Actinopolyspora mortivallis 
 Actinosynnema 
 Actinosynnema mirum 
 Actinotalea 
 Actinotalea fermentans 
 Aerococcus 
 Aerococcus sanguinicola 
 Aerococcus urinae 
 Aerococcus urinaeequi 
 Aerococcus urinaehominis 
 Aerococcus viridans 
 Aeromicrobium 
 Aeromicrobium erythreum 
 Aeromonas 
 Aeromonas allosaccharophila 
 Aeromonas bestiarum 
 Aeromonas caviae 
 Aeromonas encheleia 
 Aeromonas enteropelogenes 
 Aeromonas eucrenophila 
 Aeromonas ichthiosmia 
 Aeromonas jandaei 
 Aeromonas media 
 Aeromonas popoffii 
 Aeromonas sobria 
 Aeromonas veronii 
 
 Agrobacterium 
 Agrobacterium gelatinovorum 
 Agrococcus 
 Agrococcus citreus 
 Agrococcus jenensis 
 Agromonas 
 Agromonas oligotrophica 
 Agromyces 
 Agromyces fucosus 
 Agromyces hippuratus 
 Agromyces luteolus 
 Agromyces mediolanus 
 Agromyces ramosus 
 Agromyces rhizospherae 
 Akkermansia 
 Akkermansia muciniphila 
 Albidiferax 
 Albidiferax ferrireducens 
 Albidovulum 
 Albidovulum inexpectatum 
 Alcaligenes 
 Alcaligenes denitrificans 
 Alcaligenes faecalis 
 Alcanivorax 
 Alcanivorax borkumensis 
 Alcanivorax jadensis 
 Algicola 
 Algicola bacteriolytica 
 Alicyclobacillus 
 Alicyclobacillus disulfidooxidans 
 Alicyclobacillus sendaiensis 
 Alicyclobacillus vulcanalis 
 Alishewanella 
 Alishewanella fetalis 
 Alkalibacillus 
 Alkalibacillus haloalkaliphilus  | 
 Alkalilimnicola 
 Alkalilimnicola ehrlichii 
 Alkaliphilus 
 Alkaliphilus oremlandii 
 Alkaliphilus transvaalensis 
 Allochromatium 
 Allochromatium vinosum 
 Alloiococcus 
 Alloiococcus otitis 
 Allokutzneria 
 Allokutzneria albata 
 Altererythrobacter 
 Altererythrobacter ishigakiensis 
 Altermonas 
 Altermonas haloplanktis 
 Altermonas macleodii 
 Alysiella 
 Alysiella crassa 
 Alysiella filiformis 
 Aminobacter 
 Aminobacter aganoensis 
 Aminobacter aminovorans 
 Aminobacter niigataensis 
 Aminobacterium 
 Aminobacterium mobile 
 Aminomonas 
 Aminomonas paucivorans 
 Ammoniphilus 
   Ammoniphilus oxalaticus 
   Ammoniphilus oxalivorans 
 Amphibacillus 
 Amphibacillus xylanus 
 Amphritea 
   Amphritea balenae 
   Amphritea japonica 
 Amycolatopsis 
   Amycolatopsis alba 
   Amycolatopsis albidoflavus 
   Amycolatopsis azurea 
   Amycolatopsis coloradensis 
   Amycolatopsis lurida 
   Amycolatopsis mediterranei 
   Amycolatopsis rifamycinica 
   Amycolatopsis rubida 
   Amycolatopsis sulphurea 
   Amycolatopsis tolypomycina 
 Anabaena 
   Anabaena cylindrica 
   Anabaena flos-aquae 
   Anabaena variabilis 
 Anaeroarcus 
   Anaeroarcus burkinensis 
 Anaerobaculum 
   Anaerobaculum mobile 
 Anaerobiospirillum 
     Anaerobiospirillum succiniciproducens  
     Anaerobiospirillum thomasii 
 Anaerococcus 
   Anaerococcus hydrogenalis 
   Anaerococcus lactolyticus 
   Anaerococcus prevotii 
   Anaerococcus tetradius 
   Anaerococcus vaginalis 
 Anaerofustis 
   Anaerofustis stercorihominis 
 Anaeromusa 
   Anaeromusa acidaminophila 
 Anaeromyxobacter 
   Anaeromyxobacter dehalogenans 
 Anaerorhabdus 
   Anaerorhabdus furcosa 
 Anaerosinus 
   Anaerosinus glycerini 
 Anaerovirgula 
     Anaerovirgula multivorans 
 Ancalomicrobium 
     Ancalomicrobium adetum 
 Ancylobacter 
   Ancylobacter aquaticus 
 Aneurinibacillus 
   Aneurinibacillus aneurinilyticus 
   Aneurinibacillus migulanus 
   Aneurinibacillus thermoaerophilus 
 Angiococcus 
     Angiococcus disciformis 
 Angulomicrobium 
   Angulomicrobium tetraedrale 
 Anoxybacillus 
     Anoxybacillus pushchinoensis 
 Aquabacterium 
     Aquabacterium commune 
     Aquabacterium parvum  | 
  
  Aquaspirillum 
     Aquaspirillum polymorphum 
     Aquaspirillum putridiconchylium 
   Aquaspirillum serpens 
 Aquimarina 
   Aquimarina latercula 
 Arcanobacterium 
   Arcanobacterium haemolyticum 
   Arcanobacterium pyogenes 
 Archangium 
     Archangium gephyra 
 Arcobacter 
   Arcobacter butzleri 
   Arcobacter cryaerophilus 
   Arcobacter halophilus 
   Arcobacter nitrofigilis 
   Arcobacter skirrowii 
 Arhodomonas 
     Arhodomonas aquaeolei 
 Arsenophonus 
   Arsenophonus nasoniae 
 Arthrobacter 
     Arthrobacter agilis 
     Arthrobacter albus 
         Arthrobacter aurescens 
         Arthrobacter chlorophenolicus 
         Arthrobacter citreus 
         Arthrobacter crystallopoietes 
         Arthrobacter cumminsii 
         Arthrobacter globiformis 
         Arthrobacter histidinolovorans 
         Arthrobacter ilicis 
         Arthrobacter luteus 
         Arthrobacter methylotrophus 
         Arthrobacter mysorens 
         Arthrobacter nicotianae 
         Arthrobacter nicotinovorans 
         Arthrobacter oxydans 
         Arthrobacter pascens 
         Arthrobacter phenanthrenivorans 
         Arthrobacter polychromogenes 
         Atrhrobacter protophormiae 
         Arthrobacter psychrolactophilus 
         Arthrobacter ramosus 
         Arthrobacter sulfonivorans 
         Arthrobacter sulfureus 
         Arthrobacter uratoxydans 
         Arthrobacter ureafaciens 
         Arthrobacter viscosus 
         Arthrobacter woluwensis 
 Asaia 
     Asaia bogorensis 
 Asanoa 
   Asanoa ferruginea 
 Asticcacaulis 
     Asticcacaulis biprosthecium 
     Asticcacaulis excentricus 
 Atopobacter 
   Atopobacter phocae 
 Atopobium 
     Atopobium fossor 
     Atopobium minutum 
     Atopobium parvulum 
     Atopobium rimae 
     Atopobium vaginae 
 Aureobacterium 
   Aureobacterium barkeri 
 Aurobacterium 
   Aurobacterium liquefaciens 
 Avibacterium 
     Avibacterium avium 
     Avibacterium gallinarum 
     Avibacterium paragallinarum 
     Avibacterium volantium 
 Azoarcus 
   Azoarcus	indigens 
   Azoarcus tolulyticus 
   Azoarcus toluvorans 
 Azohydromonas 
   Azohydromonas australica 
   Azohydromonas lata 
 Azomonas 
   Azomonas agilis 
   Azomonas insignis 
   Azomonas macrocytogenes 
 Azorhizobium 
   Azorhizobium caulinodans 
 Azorhizophilus 
   Azorhizophilus paspali 
 Azospirillum 
   Azospirillum brasilense 
   Azospirillum halopraeferens 
   Azospirillum irakense 
 Azotobacter 
   Azotobacter beijerinckii 
   Azotobacter chroococcum 
   Azotobacter nigricans 
   Azotobacter salinestris 
   Azotobacter vinelandii 
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