3. Which of the following descriptions about sodium channel blockers is incorrect?
(A) Lidocaine, a local anesthetics, can block sodium channel.
(B)Tetrodotoxin(河豚毒素)is a pore blocker of sodium channel.
(C) Phenytoin, an anti-epileptic drug, is a pore blocker of sodium channel.
(D) Carbamazepinc, an anti-cpileptic drug, is a usc-dependent blocker of sodium channel.
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