VOLUME 277 (2002) PAGES 43309–43318
This article has been withdrawn by Xiaocheng Dong, Kalpana Ghoshal, Sarmila Majumder, and Samson T. Jacob. Satya P. Yadav could not be reached. The Journal questioned Figs. 1B, 1D, 2A, 4B, 5, 6A, and 6B. The withdrawing authors state that they were able to find the original data for Fig. 1B and were able to find replicate data performed at the time of the original work for Fig. 4B, which the withdrawing authors state confirm the results. The withdrawing authors stand by the reproducibility of the experimental data and the conclusions of the paper. The paper, with confirmatory data supporting the results, can be obtained by contacting the withdrawing authors.