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Bacterial community in deep-sea sediments. (A) Distribution of deep-sea sediments. (B) Representative images of bacteria isolated from deep-sea sediments. The bacteria were observed with transmission electron microscopy Scale bar, 1 μm. (C) Pie diagram of known and unknown taxonomy of OTUs in deep-sea sediment samples at the genus level. (D) The dominant genera of bacteria in different deep-sea geographical environments.
