Nico Heins, Paolo Malatesta, Francesco Cecconi, Masato Nakafuku, Kerry Lee Tucker, Michael A. Hack, Prisca Chapouton, Yves-Alain Barde and Magdalena Götz Nat. Neurosci. 5, 308–315 (2002)

The authors wish to correct the affilitation of Yves-Alain Barde, which is 4Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland. In addition, the size of the coding sequence of Pax6 inserted into the retroviral vector was incorrectly reported as 783 bp on page 314. The correct size is 1873 bp.