Isaacson, A Quinine and caffeine effects on 45Ca movements in frog sartorius muscle. [electronic resource] - The Journal of general physiology Sep 1967 - 2109-28 p. digital Publication Type: Journal Article ISSN: 0022-1295 Standard No.: 10.1085/jgp.50.8.2109 doi Subjects--Topical Terms: Action PotentialsAnimalsAnuraCaffeine--pharmacologyCalcium--metabolismCalcium IsotopesEndoplasmic ReticulumMuscle Contraction--drug effectsMuscles--metabolismPotassium--metabolismQuinine--pharmacologyWater-Electrolyte Balance