Fig. 9. Neurite outgrowth from explants of newborn rat brains. Brain explants were obtained from the cerebral cortex of postnatal day 2. rats and plated over laminin matrices obtained at neutral (A, C and E) or acidic pH (B, D and F). Explants were developed after 24 hours for DAPI (C,D) and for the neuronal marker Tau (E,F). A and B show corresponding phase-bright images. Bar, 100 µm.