In the article by Ratzinger et al entitled "Differential CD52expression by distinct myeloid dendritic cell subsets: implicationsfor alemtuzumab activity at the level of antigen presentationin allogeneic graft-host interactions in transplantation," whichappeared in the February 15, 2003, issue of Blood (Volume 101:1422-1429),there was an incorrect dosage in the third paragraph under "Cellpurification and generation of DCs." The correct dosage of FLT-3ligand is 50 ng/mL.