GardnerellaRANK: GenusTAXONOMY: Bacteria -> Terrabacteria group -> Actinobacteria -> Actinobacteria -> Bifidobacteriales -> Bifidobacteriaceae -> Gardnerella OVERVIEW: 'Gardnerella' is a genus of Gram-variable-staining facultative anaerobic bacteria of which G. vaginalis is the only species. The organisms are small (1- 1.5 mcm diameter) non-spore forming, non-motile coccobacilli. Once classified as Haemophilus Haemophilus vaginalis and afterwards as Corynebacterium Corynebacterium vaginalis, Gardnerella vaginalis grows as small, circular, convex, gray colonies on chocolate agar; it also grows on HBT agar. A selective medium for G. vaginalis is colistin-oxolinic acid blood agar.
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