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Ectothiorhodospira
Subject h. Ectothiorhodospira Subject h. Ectothiorhodospira Scope note in English A genus of vibrioid or rod-shaped cells which are motile by polar flagella. Internal photosynthetic membranes are present as lamellar stacks and contain bacteriochlorophyll a or b and carotenoids. Growth occurs photoautotrophically under anaerobic conditions. (From Bergey's Manual of Determinative Bacteriology, 9th ed) 
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