Correction: The address for Jack Favor in the article “Molecular Interaction between Projection Neuron Precursors and Invading Interneurons via Stromal-Derived Factor 1 (CXCL12)/CXCR4 Signaling in the Cortical Subventricular Zone/Intermediate Zone” by Marie-Catherine Tiveron, Mireille Rossel, Barbara Moepps, Yong Li Zhang, Ralph Seidenfaden, Jack Favor, Norbert König, and Harold Cremer, which appears on pages 13273–13278 of the December 20, 2006 issue was listed incorrectly. The correct address for Jack Favor should have been listed as Institute of Human Genetics, GSF-National Center for Environment and Health, 85764, Neuherberg, Germany.
