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Neural stem cells serve neurogenesis in several areas of the adult mammalian brain. The present study investigates an additional feature, i.e. the expression of vascular endothelial growth factor (VEGF) and its receptors in cultured neurospheres from hippocampus, subventricular zone, and olfactory bulb in adult rats. RT-PCR showed that all three lines expressed VEGF mRNA, but different sets of VEGF...