Fig. 4.
Apoptosis of grafted Schwann cells overexpressing green fluorescent protein (SCs-GFP) at different time points post-transplantation. A–G: Very few grafted SCs-GFP were underwent apoptosis. A representative TUNEL+ Schwann cell (GFP+) was shown at 5 min post-transplantation (A, arrow). H: Percent apoptosis of grafted SCs at different time points. Very few SCs-GFP were found to be apoptotic at 5 min (0.17%) and 1 d (0.03%) post-transplantation. No TUNEL+ cells were detected between 1 wk and 24 wk post-transplantation. Scale bar = 25 μm.