GRGDS peptide prevents inhibition of IFN-α–induced killing by VN/FN.

HCs were cultured for 6 days as in Figure 4 but in the presence or absence of GRGDS peptide (including 60 minutes of preincubation; 200 μM). Cell survival was measured by double staining with AO and EtBr. The results are from 2 identical experiments using cells from 2 different HCL patients.