title: The threshold for potassium-induced contractures of frog skeletal muscle. Potentiation of potassium-induced contractures by preexposure to subthreshold potassium concentrations.
mesh_terms: D000818:Animals; D001001:Anura; D002110:Caffeine / Q000494:pharmacology; D002118:Calcium / Q000378:metabolism; D003864:Depression, Chemical; D004357:Drug Synergism; D008564:Membrane Potentials; D008839:Microelectrodes; D009119:Muscle Contraction / Q000187:drug effects; D009132:Muscles / Q000187:drug effects / Q000378:metabolism / Q000502:physiology*; D009994:Osmolar Concentration; D011188:Potassium / Q000494:pharmacology*; D011894:Rana pipiens; D011896:Rana temporaria; D013268:Stimulation, Chemical; D013395:Sucrose / Q000494:pharmacology; D013997:Time Factors
chemical_list: D002110:Caffeine; D013395:Sucrose; D011188:Potassium; D002118:Calcium