Trauma-induced IVD apoptosis. Large images displayed at × 100 magnification. A) DAPI staining positive for IVD cells in the disc tissue matrix (control (left panel) versus trauma (right panel)). B) TUNEL staining demonstrates positive DNA fragmentation of IVD cells in the trauma IVD tissue sample (right panel) versus the negative control tissue (left panel).
Heyde et al. BMC Clinical Pathology 2006 6:5 doi:10.1186/1472-6890-6-5