Correction

IMMUNOLOGY. For the article “Gene therapy with a single chain interleukin 12 fusion protein induces T cell-dependent protective immunity in a syngeneic model of murine neuroblastoma” by Holger N. Lode, Torsten Dreier, Rong Xiang, Nissi M. Varki, Angray S. Kang, and Ralph A. Reisfeld, which appeared in number 5, March 3, 1998, of Proc. Natl. Acad. Sci. USA (95, 2475–2480), the authors note the following correction. Figs. 1 A and B, the legend to Fig. 1B, and lines 5–9 on page 2476 erroneously indicate that an OKT3 leader sequence was introduced upstream from the p35 gene to assure secretion in eukaryotic cells. The κ chain leader sequence of the anti-HIV-1 p24 monoclonal antibody was used instead. The leader sequence is as follows. 102030 ATGAGTGTGC CCACTCAGGT CCTGGGGTTG 405060 CTGCTGCTGT GGCTTACAGA TGCCAGATGT