Bacteria Cultures (IMAGE) University of Miami Caption These are cultures of several bacteria. From left to right: Phaeospirillum molischianum, Rhodopseudomonas palustris, Rhodobacter Sphaeroides (strain Ga), Rhodospirillum photometricum and Rhodospirillum rubrum. Credit James Sturgis Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.