Mitchell, P H THE SELECTIVE ABSORPTION OF POTASSIUM BY ANIMAL CELLS : II. THE CAUSE OF POTASSIUM SELECTION AS INDICATED BY THE ABSORPTION OF RUBIDIUM AND CESIUM. [electronic resource] - The Journal of general physiology Nov 1921 - 141-8 p. digital Publication Type: Journal Article ISSN: 0022-1295 Standard No.: 10.1085/jgp.4.2.141 doi