Up-regulation of Cx43 protein in the left myocardium of mice after long-term ingestion of 36% alcohol. Upper, an example of blots. Lanes 1-3, control group. Lanes 4-6, alcohol group. Results of denistometric analysis are shown in the lower histogram. The number of animals used for analysis is 7 in each group. * indicate p < 0.05 compared to the control group. See text for details.