medical sciences. For the article “Ex vivo cell labeling with 64Cu–pyruvaldehyde-bis(N4-methylthiosemicarbazone) for imaging cell trafficking in mice with positron-emission tomography,” by Nora Adonai, Khoi N. Nguyen, Joseph Walsh, M. Iyer, Tatsushi Toyokuni, Michael E. Phelps, Timothy McCarthy, Deborah W. McCarthy, and Sanjiv Sam Gambhir, which appeared in issue 5, March 5, 2002, of Proc. Natl. Acad. Sci. USA (99, 3030–3035; first published February 26, 2002; 10.1073/pnas.052709599), the author name Nora Adonai should have appeared as Nona Adonai. The corrected author line appears below. The online version has been corrected.
Nona Adonai, Khoi N. Nguyen, Joseph Walsh, M. Iyer, Tatsushi Toyokuni, Michael E. Phelps, Timothy McCarthy, Deborah W. McCarthy, and Sanjiv Sam Gambhir