In the article “Switching Mature Retinal Ganglion Cells to a Robust Growth State In Vivo: Gene Expression and Synergy with RhoA Inactivation,” by Dietmar Fischer, Victoria Petkova, Solon Thanos, and Larry I. Benowitz, which appeared on pages 8726-8740 of the October 6, 2004 issue, several important references were omitted:

Baugh LR, Hill AA, Brown EL, Hunter CP (2001) Quantitative analysis of mRNA amplification by in vitro transcription. Nucleic Acids Res 29: E29.

Catapano LA (2001) Stage-specific control of neocortical callosal projection neuron survival and differentiation. PhD thesis, Harvard University.

Catapano LA, Arnold MW, Perez FA, Macklis JD (2001) Specific neurotrophic factors support the survival of cortical projection neurons at distinct stages of development. J Neurosci 21: 8863-8872.Abstract/FREE Full Text

Catapano LA, Arlotta P, Cage TA, Macklis JD (2004) Stage-specific and opposing roles of BDNF, NT-3 and bFGF in differentiation of purified callosal projection neurons toward cellular repair of complex circuitry. Eur J Neurosci 19: 2421-2434.CrossRefMedline

Addendum: For the same article by Fischer et al. listed above, the authors would like to add an acknowledgment thanking Drs. Lisa Catapano, Paola Arlotta, and Jeffrey Macklis for advice about cell sorting, RNA amplification, and microarrays prior to the publication of these methods (including P. Arlotta, B. J. Molyneaux, J. Chen, R. Kominami, and J. D. Macklis, unpublished observations, and Dr. Catapano's thesis).