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Microscopic images from three sulfate-reducing isolates obtained from sediments of IODP Site U1301. (A,B) Desulfovibrio aespoeensis strain P20 (1.3 mbsf); (C,D) Desulfovibrio indonesiensis strain P23 (260.4 mbsf); (E,F) Desulfotignum balticum strain P18 (260.4 mbsf). Upper images: phase contrast (bar = 5 μm); lower images: transmission-electron microscopy, TEM (bar = 500 nm). Arrows in (B,D) indicate flagella.
