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. 2017 Nov 1;3(11):e1700807. doi: 10.1126/sciadv.1700807

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Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 3 — (A) Anaerobic nitrogen dissimilation under (left) organoheterotrophic conditions (500 μM ¹⁵NO₃⁻, 250 μM acetate, and 250 μM formate, anoxic) and (right) without the addition of electron donor (200 μM ¹⁵NO₂⁻, anoxic). See the main text for more details. Error bars indicate SD of three biological replicates. (B) FISH-SIMS analyses of single Nitrococcus cells in Namibian OMZ bottom water samples (1.20 m above seafloor), incubated with (top) ¹³C-labeled dissolved organic matter (DOM) or (bottom) ¹³C-labeled bicarbonate under hypoxic conditions. Left: Nitrococcus cells (green) targeted by CARD-FISH among other microbial cells (blue). Middle: ³²S/¹²C of the corresponding cells. Right: ¹³C/¹²C ratio. Scale bars, 1 μm.