Figure. Concentration-dependent activation of LHCGR by rLHα/β. Reporter cells were transfected with the expression plasmid for lu­te­in­iz­ing hormone/chorio­gonado­tro­pin receptor (LHCGR) and treated with various concentrations of re­com­bi­nant lu­te­in­iz­ing hormone α/β (rLHα/β). 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 26 ng/ml.