The authors of "Genetic and Biochemical Evaluation of the Importanceof Cdc6 in Regulating Mitotic Exit" (Mol. Biol. Cell [2003]14, 45924604) would like to make a correction to thepaper. In the Materials and Methods section, for Affinity Purificationand Separation of Protein Complexes, 15 milligrams of IgG-DynaBeadswas used for each lysate, not 15 micrograms.