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TRF2 (A) and Ku80 (B) protein levels evaluated in PBMCs of control (CTRL) or trained (TR) elderly people at rest, before (PRE) and after (POST) training period. Protein expression was measured as the ratio between the optical density (OD) of the marker protein and the OD of β-actin. In each panel, images show the results of immunoblotting from the same representative subject, while the histograms represent the mean±SEM.
