Correction

BIOCHEMISTRY. For the article “Sensitive detection of DNA polymorphisms by the serial invasive signal amplification reaction” by Jeff G. Hall, Peggy S. Eis, Scott M. Law, Luis P. Reynaldo, James R. Prudent, David J. Marshall, Hatim T. Allawi, Andrea L. Mast, James E. Dahlberg, Robert W. Kwiatkowski, Monika de Arruda, Bruce P. Neri, and Victor I. Lyamichev, which appeared in number 15, July 18, 2000, of Proc. Natl. Acad. Sci. USA (97, 8272–8277), the following statement was omitted from the Acknowledgments because of an oversight in the PNAS office: “J.E.D. is a founder and shareholder of Third Wave Technologies.” We apologize for the error.