Polyneuronal innervation animal tissue 4 article 4 calcium 4 calcium channel 4 calcium channel L type 4 calcium channel N type 4 calcium channel P type 4 controlled study 4 drug effect 4 endplate potential 4 neuromuscular synapse 4 nonhuman 4 priority journal 4 rat 4 Animals 2 Animals, Newborn 2 Calcium Channel Blockers 2 Calcium Channels 2 Calcium Signaling 2 Calcium channels 2 Cell Differentiation 2 Cholinergic synapse 2 Excitatory Postsynaptic Potentials 2 Fluorescent Dyes 2 Magnesium 2 Motor Neurons 2 Motor endplate 2 Motor nerve terminal 2 Muscle, Skeletal 2