Sodium-induced tension in slow skeletal muscle deprived of external calcium.
D000818:Animals; D001001:Anura; D002118:Calcium / Q000494:pharmacology*; D002463:Cell Membrane Permeability; D006863:Hydrogen-Ion Concentration; D008722:Methods; D009119:Muscle Contraction / Q000187:drug effects*; D009132:Muscles / Q000187:drug effects*; D012964:Sodium / Q000494:pharmacology*; D013779:Tetrodotoxin / Q000494:pharmacology
D013779:Tetrodotoxin; D012964:Sodium; D002118:Calcium