Depending on the genetic background, the expression of spict^KK102281 under the control of Scer\GAL4²²¹ in larval ddaE neurons leads to defects in axon regeneration, shown by a significant decrease in axon length, but not in dendrite regeneration, shown by a similar dendrite number, at 96h after laser-induced severance, as compared to controls. These neuron show an apparently normal early response to injury, since the pool of growing microtubules (identified as fluorescent EB1 comets) shows the expected increase in number and the expected reversal of polarity at 24h after laser-induced severance, as compared to controls.