title: A quantitative study of the inhibitory effect of Na+ and Mg2+ on the Ca2+ response of water fibers in the frog tongue.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D001665:Binding Sites; D001667:Binding, Competitive; D002118:Calcium / Q000037:antagonists & inhibitors* / Q000494:pharmacology; D004305:Dose-Response Relationship, Drug; D066298:In Vitro Techniques; D008274:Magnesium / Q000494:pharmacology*; D009412:Nerve Fibers / Q000187:drug effects / Q000502:physiology; D011892:Rana catesbeiana; D012964:Sodium / Q000494:pharmacology*; D013268:Stimulation, Chemical; D014059:Tongue / Q000187:drug effects / Q000294:innervation*
chemical_list: D012964:Sodium; D008274:Magnesium; D002118:Calcium