Inhibition of the ε-type and the δ-type receptors by pancuronium at 2 or 100 μM ACh.

(A1), (B1), Dose-dependent inhibition of the ε-type (A1) and the δ-type (B1) at 2 or 100 μM ACh. Data are shown as mean ± sem. Data for 100 μM ACh are identical to those shown in Fig 1C. (A2), (B2), IC50s of the ε-type (A2) and the δ-type (B2). Points and bars indicate the IC50 of individual oocytes and the means, respectively. Error bars indicate SEM (N = 6 for the ε-type (2 μM ACh), N = 6 for the δ-type (2 μM ACh)).