Correction

GENETICS. For the article “Diversity of gene expression in adenocarcinoma of the lung,” by Mitchell E. Garber, Olga G. Troyanskaya, Karsten Schluens, Simone Petersen, Zsuzsanna Thaesler, Manuela Pacyna-Gengelbach, Matt van de Rijn, Glenn D. Rosen, Charles M. Perou, Richard I. Whyte, Russ B. Altman, Patrick O. Brown, David Botstein, and Iver Petersen, which appeared in number 24, November 20, 2001, of Proc. Natl. Acad. Sci. USA (98, 13784–13789; First Published November 13, 2001; 10.1073/pnas.241500798), the following sentence should appear at the beginning of the Materials and Methods. “The complete primary data set, including expanded versions of the figures, can be found at http://genome-www.stanford.edu/lung_cancer/adeno.”