Fig. 9. Relative number of fluorescent puncta (vesicles or clusters recorded in the red channel) in growth cones challenged with 10 nM IGF-1 in control conditions or in the presence of 1 µM Wm or 20 µM LY. Values were normalized to 1 at the onset of challenge. Data points are means + s.e.m. from more than three independent growth cone assays.