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Original Western blots of phosphorylated (p) and total STAT5 content in myocardial biopsies obtained at baseline (BL) before initiation of cardiopulmonary bypass and at 5–10 min reperfusion (R10) from patients undergoing remote ischemic preconditioning (RIPC) or not (placebo). Immunoreactivitiy of pSTAT5 was normalized to the respective total protein. Ratios are presented in bar graphs.
