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. 2016 Oct 5;7:1576. doi: 10.3389/fmicb.2016.01576

Figure 3.

Figure 3

Concentrations of solid phase sulfur fractions. (A) AVS (acid-volatile sulfide) fraction, (B) CRS (chromium-reducible sulfur) fraction. (C) Isotopic composition (δ34S) of the CRS fraction.