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Competition between TEAEXT and AbeTx1 on KV1.1 and KV1.6. Shown are the currents for control, steady-state block by TEAEXT (200 µM for KV1.1 and 920 µM for KV1.6) and the subsequent effect of AbeTx1 (600 nM for KV1.1 and 120 nM for KV1.6) together with tetraethylammonium (TEA). Currents were evoked by 500 ms depolarization to 0 mV followed by a 500 ms pulse to -50 mV, from a holding potential of −90 mV.
