| Genus Gemella Berger, 1960 |
| Gram-positive ovoid cells, arranged in pairs, tetrads, small clusters, or short chains. Some strains may decolorize readily and appear Gram-negative. Nonspore-forming, nonmotile. Facultatively anaerobic. Catalase- and oxidase- negative. No growth at 10 ºC or at 45 ºC. Glucose and some other carbohydrates are fermented. Esculin, gelatin, and hippurate are not hydrolyzed. Nitrate is not reduced |
(c) Costin Stoica
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LEGEND
* marked species are not included in ABIS biochemical database
* marked species are not included in ABIS biochemical database
 | Gemella asaccharolytica * |
 | Gemella bergeri | |
| Gemella cuniculi | |
| Gemella haemolysans | |
| Gemella morbillorum | |
| Gemella palaticanis |
| Gemella parahaemolysans * |
| Gemella sanguinis |
| Gemella taiwanensis * | |