during the log phase of growth both the active , ouabain-sensitive k+ uptake , measured as 86rb+ , and the sodium and potassium ion-activated atpase ( ( na+ + k+ ) -atpase ) activity of sv40-transformed 3t3 cells were 2.5-and 5,5-fold higher , respectively , than in untransformed 3t3 cells .
C0001473
atpase
C0001479
na