Neural progenitor cells were collected from E15–E17 tissue without exposure to alcohol and expanded as adherent monolayer cultures in the presence of growth factors (EGF, FGF-2) for immunohistochemistry. Fig. 2A is a 20X representative image of the proliferating NPC culture conditions; Nestin, which marks neural progenitor cells, is in green with a DAPI nuclear stain in blue. Fig. 2B is a 20X representative image of the differentiated NPC culture conditions; GFAP, which marks astrocytes, is in green with a DAPI nuclear stain in blue and the immature neuronal marker doublecortin (DCX) in red.