4. What defines the start and termination of a 'chemical transmission' during a process of neuronal activation?
(A) Neurotransmitter release followed by transmitter uptake
(B) Neurotransmitter release and then calcium channel close
(C) Receptor down-regulation followed by receptor up-regulation
(D) Sodium channel open followed by receptor down-regulation
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統計: 尚無統計資料
統計: 尚無統計資料