CD40LG and B-cell chronic lymphocytic leukemia: CLL frequency and onset was not altered in IgH.TEμ.Cd40l−/−mice (~59%, compared with ~62% in IgH.TEμ control littermates; p = 0.99) or in IgH.TEμ.Aicda−/− mice (~62%, compared with ~64% in IgH.TEμ control littermates; p = 0.78) (Figures 2A,B).