In the article “Dysfunction of the Cholesterol Biosynthetic Pathway in Huntington's Disease,” by Marta Valenza, Dorotea Rigamonti, Donato Goffredo, Chiara Zuccato, Simone Fenu, Laure Jamot, Andrew Strand, Alessia Tarditi, Ben Woodman, Marco Racchi, Caterina Mariotti, Stefano Di Donato, Alberto Corsini, Gillian Bates, Rebecca Pruss, James M. Olson, Simonetta Sipione, Marzia Tartari, and Elena Cattaneo, which appeared on pages 9932–9939 of the October 26, 2005 issue, the authors report that in composing Figure 5b, the white panels in the membrane and nuclear fractions, indicating, respectively, the absence of nuclear and membrane protein contaminants, were duplicated by mistake. Examination of the original films shows similarly white panels indicating the absence of contaminating proteins in the two fractions. This error does not affect the conclusions of the article. The authors regret this error.
