In the article “Axonally Synthesized β-Actin and GAP-43 Proteins Support Distinct Modes of Axonal Growth” by Christopher J. Donnelly, Michael Park, Mirela Spillane, Soonmoon Yoo, Almudena Pacheco, Cynthia Gomes, Deepika Vuppalanchi, Marguerite McDonald, Hak Kee Kim, Tanuja T. Merianda, Gianluca Gallo, and Jeffery L. Twiss, which appeared on pages 3311–3322 of the February 20, 2013 issue, the authors regret a misspelling of the ninth author name. The corrected author line is: Christopher J. Donnelly, Michael Park, Mirela Spillane, Soonmoon Yoo, Almudena Pacheco, Cynthia Gomes, Deepika Vuppalanchi, Marguerite McDonald, Hak Hee Kim, Tanuja T. Merianda, Gianluca Gallo, and Jeffery L. Twiss which has been corrected on the online PDF version.