In the article, “Active Transport of the Survival Motor Neuron Protein and the Role of Exon-7 in Cytoplasmic Localizatio,” by Honglai L. Zhang, Feng Pan, Daewha Hong, Shailesh M. Shenoy, Robert H. Singer, and Gary J. Bassell, which appeared on pages 6627-6637 of the July 23, 2003 issue, a printer's error incorrectly attributed the findings of “Cifuentes-Diaz et al. (2002) to the authors of the current paper. The sixth sentence in the first full paragraph on page 6635 should actually read “Cifuentes-Diaz et al. (2002) suggest that the motor neuron dysfunction and denervation may be attributable to a “dying back” axonopathy in these mice and possibly also in SMA.” A second copyediting error also appears on page 6635, in the first sentence of the last full paragraph. In that sentence, the original wording, “P19 embryonal carcinoma cells” should have been retained, but was erroneously changed to “postnatal day 19 neuroblastoma cells.”
