FIG. 1.
(A and C) Epifluorescence photomicrographs of strains CVO (A) and FWKO B (C) grown with sulfide and nitrate (bars = 20 μm). (B and D) SEM photomicrographs of strains CVO (B) and FWKO B (D) grown on sulfide and nitrate (bar = 2 μm).
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