Figure 4. Calcium2+ uptake by cerebral microsomes, a measure of smooth endoplasmic reticulum Calcium2+ ATPase (SERCA) activity, in rats in the control, anesthetized, and recovered treatment groups. Uptake was assayed as described in the text. Columns represent means of two experiments comprised of eight rats each. No significant differences in SERCA activity were noted among the treatment groups. Error bars indicate 95% confidence limits for the mean.