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BrdU incorporation in the adult human cerebral cortex. (A) Distribution of BrdU-labeled cells in the adult human motor cortex. (B) A subset of BrdU-labeled cells are immunoreactive to the astrocyte marker GFAP. (C and D) None of the BrdU-labeled cells are immunoreactive to the neuronal markers NeuN (C) or neurofilament (D). [Scale bars, 70 μm (B) and 100 μm (C and D).]
