Lapalombella et al. Lenalidomide down-regulates the CD20 antigen and antagonizes direct and antibody-dependent cellular cytotoxicity of rituximab on primary chronic lymphocytic leukemia cells. Blood. 2008;112(13):5180–5189.

On page 5183 in the December 15, 2008, issue, Figure 1B is labeled incorrectly. The legend for panel 1B should read: “(B) Results for CD20, CD19, CD5, and CD3 surface expression from a representative experiment. Gray line indicates vehicle-treated cells; dark line, lenalidomide-treated cells. Control IgG1k-PE and forward scatter/side scatter plot are shown.”