Lack of effects of antagonists of store-operated currents on I_slow. (A) 50 µM SKF96365 was continuously pressure-ejected by a puffer pipette, beginning shortly after the slow current had peaked (horizontal line). There was no discernible alteration in the time course of the current, indicating that I_slow was not suppressed. V_h = −50 mV; light intensity of 28.6 × 10¹⁵ × photons × cm⁻² × s⁻¹). (B) A large-amplitude I_slow elicited in the presence of 1 mM La³⁺ (applied by extensive bath superfusion before applying the light stimulus). V_h = −60 mV; light intensity of 2.39 × 10¹⁵ photons × cm⁻² × s⁻¹).