title: Barium ions and excitation-contraction coupling of frog single muscle fibres under controlled current and voltage.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D001001:Anura; D001464:Barium / Q000494:pharmacology*; D002463:Cell Membrane Permeability / Q000187:drug effects; D004553:Electric Conductivity; D066298:In Vitro Techniques; D009119:Muscle Contraction / Q000187:drug effects; D009132:Muscles / Q000502:physiology*; D011893:Rana esculenta
chemical_list: D001464:Barium