Figure 2

Growth factors influence several steps of neurogenesis. NSC: neural stem cell, NPC: neural progenitor cell, GPC: glial progenitor cell, FGF-2: basic fibroblast growth factor, EGF: epidermal growth factor, CNTF: ciliary neurotrophic factor, EPO: erythropoietin, PDGF: platelet-derived growth factor, IGF-1: insulin-like growth factor-1, BMP-2: bone morphogenetic protein-2, BDNF: brain-derived neurotrophic factor, T3: thyroid hormone