Fig. 7.
Inhibition of estradiol sulfonation in sheep placenta, measured at 1 nM estradiol, by various concentrations of 2′hydroxy-triclocarban (2′OH-TCC). The lines shown are the fits of fraction control activity versus log [2′OH-TCC] to sigmoidal dose–response curves for each of 3 individuals. Error bars on each line indicate the S.D. of assay replicates at each concentration of 2′OH-TCC. The mean IC50 value is indicated on the graph.