In the article “Synaptic Clustering of PSD-95 Is Regulated by c-Abl through Tyrosine Phosphorylation” by Karen Perez de Arce, Lorena Varela-Nallar, Olivia Farias, Alejandra Cifuentes, Paulina Bull, Brian A. Couch, Anthony J. Koleske, Nibaldo C. Inestrosa, and Alejandra R. Alvarez, which appeared on pages 3728–3738 of the March 10, 2010 issue, Karen Perez de Arce's name was indexed incorrectly and should have been listed as Perez de Arce, Karen. (This published notice is necessary to correct the listing in bibliographic databases).