Correction

NEUROBIOLOGY. For the article “Functional identification and reconstitution of an odorant receptor in single olfactory neurons” by Kazushige Touhara, Shintaro Sengoku, Koichiro Inaki, Akio Tsuboi, Junzo Hirono, Takaaki Sato, Hitoshi Sakano, and Tatsuya Haga, which appeared in number 7, March 30, 1999, of Proc. Natl. Acad. Sci. USA (96, 4040–4045), the authors note the following correction. In Fig. 4, the methyl group at the 3′ position is missing in the chemical structures of hydroxycitronellol (HC) and hydroxycitronellal dimethyl acetal (HCA). The International Union of Pure and Applied Chemistry (IUPAC) nomenclature for HC and HCA is 3,7-dimethyloctan-1,7-diol and 3,7-dimethyl-7-hydroxyoctan-1-al dimethyl acetal, respectively.