Figure 3. Exercise-induced increase in serum extracellular vesicles reduces cardiac ischemia/reperfusion (I/R) injury.
(a) Heart samples were stained with 2,3,5-triphenyltetrazolium chloride (TTC) to examine the infarct size after I/R injury (n=6). (b) TUNEL-positive nuclei in α-actinin-labeled cells were calculated to determine myocardial apoptosis (n=6). Scale bar=20 μm. (c) Western blot for Bcl-2 and Bax in heart samples (n=3). AAR, area at risk; INF, infarct size; LV, left ventricle; CM, cardiomyocytes. *, P<0.05 vs. PBS group; #, P<0.05 vs. Swim group.