Motor nerve terminal article 6 calcium channel L type 6 nonhuman 6 priority journal 6 Animals 4 Calcium Channel Blockers 4 Calcium Channels, L-Type 4 Motor Endplate 4 Muscle, Skeletal 4 Nitrendipine 4 Presynaptic Terminals 4 Synaptic Transmission 4 acetylcholine 4 acetylcholine release 4 animal tissue 4 calcium channel 4 calcium channel N type 4 calcium channel P type 4 calcium channel Q type 4 calcium transport 4 controlled study 4 drug effect 4 methoctramine 4 muscarinic M4 receptor 4 neuromuscular synapse 4 neurotransmitter release 4 nitrendipine 4 omega conotoxin GVIA 4 omega-Agatoxin IVA 4