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NG2+ cells are permissive to axon outgrowth and express vimentin and nestin. A, Confocal image (40×) showing the association of axons of β-tubulin+ (red) axons with NG2+ (green) cells on a gradient of aggrecan and laminin after 2 d in vitro. Arrowheads indicate NG2+ cells and arrows indicate NG2 negative satellite cells. B, NG2+ cells express vimentin (red). C, NG2+ cells express nestin (red). Scale bars: A–C, 50 μm.
