title: Evidence for membrane surface from measurement of potassium kinetics as a function of external divalent cation concentration.
mesh_terms: D001369:Axons / Q000166:cytology / Q000187:drug effects / Q000378:metabolism / Q000502:physiology*; D002118:Calcium / Q000494:pharmacology*; D002462:Cell Membrane / Q000502:physiology*; D049832:Decapodiformes; D007700:Kinetics; D008274:Magnesium / Q000494:pharmacology*; D008433:Mathematics; D008564:Membrane Potentials / Q000187:drug effects; D011188:Potassium / Q000378:metabolism*
chemical_list: D008274:Magnesium; D011188:Potassium; D002118:Calcium