Human ADRA1B

Figure. Concentration-dependent activation of ADRA1B by L‐phenylephrine

Reporter cells were transfected with either the expression plasmid for human adrenoceptor alpha 1B (ADRA1B) or the mock plasmid and treated with various concentrations of L‐phenylephrine. Data points shown are the mean ± SEM of an experiment (n = 3), and the curve is a fit to Hill equation with an EC50 of 28 nM.