In the article, “Upregulation of L-Type Ca2+Channels in Reactive Astrocytes after Brain Injury, Hypomyelination, and Ischemia,” by R. E. Westenbroek, S. B. Bausch, R. C. S. Lin, J. E. Franck, J. L. Noebels, and W. A. Catterall, which appeared on pages 2321–2334 of the April 1, 1998 issue, in Figure 2 (page 2324) panels A and D are duplications of the same image. A revised version of Figure 2 with the correct panel D is printed here. The original description of the experiment and the results is correct, and all of the other images are unchanged.
