Fig. 3. Substrate affinity for ATP as a function of temperature for
Na+/K+-ATPase activity in O. lactea in (A) foot
muscle and (B) hepatopancreas. Values are means ± s.e.m., N=4
independent preparations of enzyme except for foot muscle control and
estivated activity, which are N=9. *Significantly
different from the corresponding control incubation; Student's
t-test, P<0.01.