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Elemental sulfur metabolism of strain SB164P1. Sulfur was added in excess. (Top) Incubation without ferrihydrite. Results are means of two incubations. (Middle) Incubation with ferrihydrite. Results are means of two incubations. FeS2 represents pyrite sulfur. Note the different scales in the top and middle panels. (Bottom) Cell counts from two parallel incubations with and without ferrihydrite. Note the logarithmic scale.
