Irminger-Finger et al. Vol. 143, No. 5, November 30, 1998. Pages 1329–1339.During editing, an error was introduced into the affiliations line of Irminger-Finger et al. It should have appeared as it did in the final submitted version as follows:Irmgard Irminger-Finger,* Jesus V. Soriano, Geneviève Vaudan,* Roberto Montesano, and André-Pascal Sappino* *Division of Oncology and Department of Morphology, University of Geneva Medical Center, CH1226 Geneva, Switzerland