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Harper, James M., Chitra Krishnan, Jessica S. Darman, Deepa M. Deshpande, Schonze Peck, Irina Shats, Stephanie Backovic, Jeffrey D. Rothstein, a Douglas A. Kerr. Axonal Growth of Embryonic Stem Cell-derived Motoneurons in Vitro and in Motoneuron-injured Adult Rats. National Academy of Sciences, 2004.

Harper, James M., et al. Axonal Growth of Embryonic Stem Cell-derived Motoneurons in Vitro and in Motoneuron-injured Adult Rats. National Academy of Sciences, 2004.