title: Proceedings: 231. Role of Ca++ and Mg++ in neuromuscular transmission and excitation of the radula protractor.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D002118:Calcium / Q000494:pharmacology*; D066298:In Vitro Techniques; D008274:Magnesium / Q000494:pharmacology*; D008974:Mollusca; D009469:Neuromuscular Junction / Q000502:physiology*; D013268:Stimulation, Chemical; D009435:Synaptic Transmission / Q000187:drug effects*
chemical_list: D008274:Magnesium; D002118:Calcium