Abstract
Some studies have been reported on the cation movement in guinea pig's taenia coli in the presence of high concentration of environmental potassium (K) (1-8), none of which has dealt with the effect of high concentration of K on K exchange. In the present study, K exchange has been studied in the guinea pig's taenia coli under elevated environmental K concentration for the purpose of clarifying the physiological nature of K-induced contracture, following the previous mechanographic study of the same purpose (9).
