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SCI-induced apoptosis. Western blot analysis was performed on protein extracts derived from the distal femoral metaphysis of uninjured and injured rats. Cleaved caspase 3 (17/19 kDa) and cleaved caspase 7 (20 kDa) were detected in the day 3 and day 5 post-injury samples but not in the uninjured controls. β-actin (45 kDa) was used as a loading control
