Vol. 201 No. 7, June 24, 2013. Pages 997–1012.

The authors noticed an unintended Western blot panel in the original version of Fig. 1. The authors have indicated that this was due to a clerical error during figure revision. A corrected version of Fig. 1 is shown below.

The html and pdf versions of this article have been corrected. The error remains only in the print version.