MEDICAL SCIENCES.
For the article “Glutamate antagonists limit tumor growth” by Wojciech Rzeski, Lechoslaw Turski, and Chrysanthy Ikonomidou, which appeared in number 11, May 22, 2001, of Proc. Natl. Acad. Sci. USA (98, 6372–6377; First Published May 1, 2001; 10.1073/pnas.091113598), the authors note that Dr. Turski's current affiliation was inadvertently included in the list of author affiliations. The correct lists of authors, affiliations, and author footnotes are below: