The authors of Mol. Biol. Cell [2003] 14, 40034014 wouldlike to make a correction to the paper. The title of the papershould be "Regulation of Cdc2/Cyclin B Activation in XenopusEgg Extracts via Inhibitory Phosphorylation of Cdc25C Phosphataseby Ca2+/Calmodulin-dependent Protein Kinase II." An error inthe word calmodulin was inserted during formatting of the manuscript.