Figure. Concentration-dependent activation of SSTR5 by somato­statin-14. Reporter cells were transfected with either the expression plasmid for somato­statin receptor 5 (SSTR5) or the mock plasmid and treated with various concentrations of somato­statin-14. Data points shown are the mean ± SEM of an experiment performed in triplicate, and the curve is a fit to Hill equation with an EC50 of 1.7 nM.