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. 2022 Apr 20;17(4):e0267093. doi: 10.1371/journal.pone.0267093

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© 2022 Bihan et al

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Fig 2 — Plot of linear regression for known ¹²C:¹³C ratios versus observed ¹²C:¹³C ratios for 11 standard mix solutions with ¹²C- and ¹³C- SCFAs concentration ratios ranging from 0.5 to 20. Slopes for fitted regression lines and r² corresponding to plots are shown. Dashed line represents a slope of 1. Error bars represent standard deviation, n = 3 technical replicates.