Figure 3From: The effect of EGTA and Ca++ in regulation of the brain Na/K-ATP-ase by noradrenalineDependence of Na/K-ATPase activity (μmol Pi/hour × mg protein) on SF concentration (μg/ml) in inverse values and in the presence the of 0.3 mM EGTA, 0.1 mM NA and various concentrations of the Ca2+-ions. 1 – no Ca2+-ions added; 2 – added [Ca2+] = 0.1 mM.Back to article page