Retraction for Coldren et al., Flexible bilayers with spontaneous curvature lead to lamellar gels and spontaneous vesicles

CHEMISTRY.For the articles “Flexible bilayers with spontaneous curvature lead to lamellar gels and spontaneous vesicles,” by Bret A. Coldren Heidi Warriner Ryan van Zanten Joseph A. Zasadzinski and Eric B. Sirota, which appeared in issue 8, February 21, 2006, of Proc Natl Acad Sci USA (103:2524–2529; first published February 8, 2006; 10.1073/pnas.0507024103), and “Lamellar gels and spontaneous vesicles in catanionic surfactant mixtures,” by Bret A. Coldren, Heidi Warriner, Ryan van Zanten, Joseph A. Zasadzinski, and Eric B. Sirota, which appeared in issue 6, March 14, 2006, of Langmuir (22:2465–2473), the editors of both journals retract these papers because they constitute duplicate publication.