Figure 5.

Neurite growth from neurons that had been preincubated with NGF. A, The mean neurite length on the corpus callosum from neurons that had been preincubated with 200 ng/ml nerve growth factor (NGF) did not significantly differ from that of neurons that had been preincubated in culture medium only. B, The mean angular deviation of neurites from an orientation parallel to the longitudinal axis of the underlying corpus callosum was significantly greater from NGF-pretreated neurons compared with those preincubated in culture medium only. All bars indicate mean + SEM (^*p < 0.05).