Figure 6

Cleaved caspase 3 expression in canine dorsal root ganglia neurons. The neurons were grown without growth factors or GM1 ganglioside (no supplements) or supplemented with fibroblast growth factor 2 (FGF), nerve growth factor (NGF), GM1, FGF and GM1, or NGF and GM1 and stained for cleaved caspase 3 (green) and non-phosphorylated neurofilament (nNF, red) 2 days post seeding. Shown are representative pictures of neurons cultured without supplements and neurons supplemented with NGF and GM1. Note cleaved caspase 3 positive neurons (arrows) and cleaved caspase 3 negative neurons (arrowheads). Bars = 100 µm. The graph shows the percentage of cleaved caspase 3 positive neurons for each condition (single values of 3 dogs with means). *Statistically significant differences (P < 0.05) compared to neurons cultured without supplements. No suppl. = no supplements.