title: Speed of voltage threshold shift after step-changes of (Na)o and (Ca)o at the outer surface of frog skin.
mesh_terms: D000200:Action Potentials; D000818:Animals; D001001:Anura; D002118:Calcium / Q000494:pharmacology*; D002463:Cell Membrane Permeability; D002794:Choline / Q000494:pharmacology; D004553:Electric Conductivity; D004558:Electric Stimulation; D004566:Electrodes; D004594:Electrophysiology / Q000295:instrumentation; D004848:Epithelium / Q000187:drug effects; D007474:Ion Exchange; D008564:Membrane Potentials; D008722:Methods; D011893:Rana esculenta; D012867:Skin / Q000187:drug effects; D012879:Skin Physiological Phenomena; D012964:Sodium / Q000494:pharmacology*; D013997:Time Factors
chemical_list: D012964:Sodium; D002794:Choline; D002118:Calcium