Vol. 198 No. 1, July 9, 2012. Pages 103–114.
The actin panel in the original version of Fig. 5 B was flipped horizontally, and the Fig. 5 B and Fig. 6 C legends did not indicate the intentional duplication of the 3 and 4 d actin data. In addition, the HIF-2α panel in the original version of Fig. 7 C was a duplicate of the HIF-2α panel in Fig. 6 F. The authors have indicated that these issues were due to clerical errors during figure and manuscript preparation. Corrected versions of Fig. 5 B and Fig. 7 C and of the Fig. 5 B and Fig. 6 C legends are shown below.
The html and pdf versions of this article have been corrected. The errors remain only in the print version.