Figure 5.

Effect of TGFα-PE38 (T-PE) on CTL cell viability. CTLs were incubated with 5 ng/ml T-PE for three days. The percentage of remaining live cells was determined by the XTT assay. CTLs incubated without T-PE versus with T-PE, P=0.87 (χ² test). Bars are standard error of the mean (n=2). CTLs alone was set to 100%, so the error bar is not shown. TGF, tumor growth factor; PE, Pseudomonas endotoxin; CTL, cytotoxic T lymphocytes.