The antagonism of Ca2+ by Na+ and other monovalent ions at the frog neuromuscular junction.
D000200:Action Potentials; D000643:Ammonium Chloride / Q000494:pharmacology; D000818:Animals; D001001:Anura; D002118:Calcium / Q000037:antagonists & inhibitors*; D002712:Chlorides; D004594:Electrophysiology; D005071:Evoked Potentials; D005998:Glycine / Q000494:pharmacology; D008094:Lithium / Q000494:pharmacology; D009132:Muscles / Q000502:physiology; D009469:Neuromuscular Junction / Q000502:physiology*; D011188:Potassium / Q000494:pharmacology; D012964:Sodium / Q000494:pharmacology*; D013395:Sucrose / Q000494:pharmacology