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The Editors wish to express their concern about the 15 November 2007 article cited above, regarding the reliability and/or veracity of the data and the study outcomes while awaiting the conclusions of the institutional investigation. Duplications of actin bands between Figures 2 and 4B were noted. The primary data indicate that the bands shown in both figures are from the experiment shown in Figure 4B. The original data for the experiment shown in Figure 2 have not been located. Should additional information become available about the conduct of this study, the Journal will evaluate that information carefully and determine whether additional notifications will be necessary.