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. Author manuscript; available in PMC: 2021 Dec 29.
Published before final editing as: J Am Soc Mass Spectrom. 2020 Jun 29:10.1021/jasms.0c00015. doi: 10.1021/jasms.0c00015

Figure 1.

Figure 1.

Four ring structure common to all bile acids. Carbons are numbered with substituents located at carbons 3, 6, 7, and 12, highlighted in red font. R groups are −H, −OH, or −HSO4 groups. Carbon 24, highlighted in blue font, is conjugated with glycine or taurine to yield glycocholates and taurocholates, respectively.