COLLOQUIUM. For the article “Segmented nanofibers of spider dragline silk: Atomic force microscopy and single-molecule force spectroscopy,” by E. Oroudjev, J. Soares, S. Arcdiacono, J. B. Thompson, S. A. Fossey, and H. G. Hansma, which appeared in Supplement 2, April 30, 2002, of Proc. Natl. Acad. Sci. USA (99, 6460–6465; First Published April 16, 2002; 10.1073/pnas.082526499), the authors note that the author name S. Arcdiacono should be S. Arcidiacono. The online version has been corrected.
