“…This possibility must remain a suggestion, however, until determinations of intracellular levels of potassium are made in man following insulin therapy and until the amount which may shift into the liver can be determined. In the normal individual, as well as the diabetic, insulin is known to decrease the serum potassium levels (4,29,30). The exact mechanism of this action of insulin on serum potassium is not known, but it has been suggested that it is correlated with shifts of glucose and phosphate into the cell, for formation of a potassium hexosephosphate (see Figure 2), or into the liver in glycogenesis (4,29,31,32).…”