TNF and B-cell chronic lymphocytic leukemia: For example the mean relative number (±SEM) of CLL cells adherent to TNFα-treated HMEC-1 increased to 144.3% ± 8.3% (p<0.01, n=8) and to 143.9% ± 16.9% on TNFα-treated CLL-MSC respectively (p<0.05, n=8) when compared to respective untreated controls (Figure 1A).