Cell-specific incorporation of 13C-labeled bicarbonate by the Sulfurovum epibionts on S. crosnieri seta in the presence and the absence of thiosulfate according to FISH–Nano-SIMS.

The percent enrichment was estimated using the average 13C/12C ratio of bulk organic carbon of the epibiotic microbial community before the experiment shown in Table 2.*The filamentous cells were identified as Sulfurovum members by FISH.†The filamentous cells were not identified as the Sulfurovum members by FISH.