Relative abundance of taurine- (A) and glycine- (B) conjugated cholic acid in serum from non-cholestatic donors and patients before and after biliary stenting.

TCA and GCA were quantified as indicated in the “Experimental Procedures” section. Their relative abundance was calculated relatively to the sum of all bile acids. Graphics represent the mean ± SEM (nM). P-values were determined by the Wilcoxon/Mann-Whitney rank-sum test. **: p<0.01, ***: p<0.001. n.s.: not significant.