title: K-Ca interrelation in muscular activity.
mesh_terms: D000200:Action Potentials; D000818:Animals; D001001:Anura; D002118:Calcium / Q000378:metabolism*; D008163:Luminescent Measurements; D009119:Muscle Contraction; D009132:Muscles / Q000502:physiology*; D009994:Osmolar Concentration; D011188:Potassium / Q000378:metabolism*; D011896:Rana temporaria
chemical_list: D011188:Potassium; D002118:Calcium