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. Author manuscript; available in PMC: 2014 Jul 24.
Published in final edited form as: Curr Opin Genet Dev. 2012 Aug 4;22(5):517–522. doi: 10.1016/j.gde.2012.07.002

Figure 1.

Figure 1

Roads to induced neural precursor cells (NPCs) from fibroblasts. NPCs capable of self-renewal and differentiation into the three neural lineages can be induced by two conceptually separate mechanisms: (1) ectopic expression of the four Yamanaka factors to induce a pluripotent state which can be differentiated to NPCs, or (2) by direct conversion with forced expression of lineage specific transcription factors.