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The giant phototrophic bacterium Thiospirillum jenense was first discovered in 1838. Its large size (up to 100μm), spiral shape, orange-brown color, and formation of sulfur globules visible under the light microscope, made it an interesting study object for several renowned microbiologists throughout the 20th century. Although a very intriguing organism, it was proven to be extremely difficult to cultivate in the lab and even to date, no pure culture has been obtained…. Read More