Fig. 6.
Effect of ablating a PD cell on the outgrowth of the AP longitudinal projections. The ablation was performed at E8–E9, but the embryos were examined at E12, when the lateral projections of the AP cell are initially established, or E14, when normally there is already an extensive arbor. At E12, neither the anterior nor the posterior longitudinal projections were significantly longer than the controls (p > 0.2). At E14, however, the posterior longitudinal projections (*), but not the anterior ones, had grown significantly more than the controls (p < 0.01).