In the original article, there was a mistake in Figure 3D as published. In this instance, the annexin V fluorescence-activated cell sorting (FACS) image for Figure 1B (top right) had been unintentionally duplicated and substituted for the annexin V FACS image in Figure 3D (top left). As it is an untreated drug control rather than drug test additions, no scientific benefit or advantage interpretation could be made by duplicating the data here. The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The amended Figure 3 is attached.
An incorrect version of Figure 3 appared in the May 2009 Issue on page 644. The correct version of Figure 3 is published on this page.
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