In the article “A Glial Endogenous Cannabinoid System Is Upregulated in the Brains of Macaques with Simian Immunodeficiency Virus-Induced Encephalitis,” which appeared on pages 2530-2536 of the March 9, 2005 issue, the names of two authors are incorrect. The second author is Woong-Ki Kim, and the seventh author is Kenneth Williams.
