| rhodobacter sphaeroides | Spherical phototrophic bacteria found in mud and stagnant water exposed to light. (12 Dec 1998) |
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| rhodobacter | A genus of gram-negative bacteria widely distributed in fresh water as well as marine and hypersaline habitats. (12 Dec 1998) |
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| rhodobacter capsulatus | Non-pathogenic ovoid to rod-shaped bacteria that are widely distributed and found in fresh water as well as marine and hypersaline habitats. (12 Dec 1998) |