VOLUME 286 (2011) PAGES 37368–37378
PAGE 37371:
Due to an inadvertent error, the wrong image was presented for part of Fig. 1C. The correct image is shown below. The last sentence of the figure legend to Fig. 1 should read, “data are representative of n ≥ 2 independent experiments.” The conclusions of the paper remain unchanged.
PAGE 37373:
Due to an inadvertent error, the wrong image was presented for part of Fig. 3A. The correct image is shown below. The figure legend is correct as it appears. The conclusions of the paper remain unchanged.


