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Bipolar cell currents evoked by epiretinal stimulation were inhibited by the GABAa/c antagonist picrotoxin (0.1 mM) and were enhanced by the glycine antagonist strychnine. The same cell is shown in (A) and (B). Stimulation parameters: (A) 5 milliseconds, 10 μA; (B) 5 milliseconds, 20 μA.
