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. 2016 May 18;116(2):686–697. doi: 10.1152/jn.00990.2015

Fig. 5.

Fig. 5.

Dopamine D1R agonist SKF38393 reduced Ca channel currents in isolated mouse horizontal cells, while dopamine D2R agonist quinpirole had small effect. A: Ca channel currents recorded in response to the voltage step paradigm shown in Fig. 1C before SKF38393 application. B: Ca channel currents recorded during treatment with 20 μM SKF38393 (SKF) show reduction of amplitude and slowed activation. C: steady-state I-V relations for recordings in A and B. D: Ca channel currents recorded before application of dopamine D2R agonist quinpirole. E: Ca channel currents recorded during treatment with 20 μM quinpirole show little reduction of amplitude and normal activation kinetics. F: steady-state I-V relations for recordings in D and E. G: % of peak control current that was blocked by SKF38393 (SKF) and by quinpirole (Quin). *P < 0.05.