Correction

NEUROSCIENCE. For the article “Brain monoglyceride lipase participating in endocannabinoid inactivation,” by T. P. Dinh, D. Carpenter, F. M. Leslie, T. F. Freund, I. Katona, S. L. Sensi, S. Kathuria, and D. Piomelli, which appeared in number 16, August 6, 2002, of Proc. Natl. Acad. Sci. USA (99, 10819–10824; First Published July 22, 2002; 10.1073/pnas.152334899), the term CB₁ appeared incorrectly as CB¹ four times due to a printer's error. The term was used in line 17 of the Abstract, in line 4 from the bottom of the right column on page 10823, and in lines 4 and 5 of the left column on page 10824.