Glial fibrillary astrocytic protein (GFAP) and βIII-tubulin expression in differentiated olfactory bulb-derived (OB-ns) and subventricular zone-derived (SVZ-ns) neurospheres. (A-B) Photomicrographs showing GFAP-expression in control OB-ns (A) and OM-CM cultures (B). Proportions of GFAP-expressing cells in OB-ns and SVZ-ns cultures are shown in histogram graphs in C and D, respectively. (E-F) Photomicrographs showing βIII-tubulin expression in control (E) and OM-CM cultures (F). Proportions of βIII-tubulin-expressing cells in OB-ns and SVZ-ns cultures are shown in histogram graphs in G and H, respectively. Scale bar in A, B, E, F: 50 μm.