“All five bile acids, which … serum, chenodeoxycholic acid (CDCA), cholic acid (CA), deoxycholic acid (DCA), lithocholic acid (LCA), and …-dependently inhibited both basal and TSH-induced iodide uptake at concentrations of 25-250 microM. Since CDCA is one … primary endogenous bile acids, were studied mainly the effects of CDCA.”