Fig. 6. Western blot analysis of Na⁺–Ca²⁺exchange (NCX) protein content in homogenates of myocardial tissue from control (CTL), ischemic only (ISC), and anesthetic preconditioned (APC) and ischemic preconditioned (IPC) hearts. Blots show levels of NCX protein. Bands are quantitative immunoblots of representative samples from hearts of different groups run in the same gel. Group results exhibit values (mean ± SEM) in the treatment groups are expressed as percentage of CTL group. There were no differences among groups.