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Cleaved caspase-3 (19 kDa) and procaspase-3 (43 kDa) are elevated in myotubes following doxorubicin exposure. Averaged data for cleaved caspase-3 (A) and procaspase-3 (B) protein (n = 3/group) relative to total protein in myotubes exposed to doxorubicin. C: averaged data for actin fragment relative to total actin (n = 3/group). Data are means ± SE. *P < 0.05 vs. control. Representative Western blots may not be from contiguous lanes.
