Figure 7.
Effect of HKLP titration on proliferation of fresh versus cultured Teff cells and cultured Tregs. Cells were stimulated with different concentrations of HKLP in the absence or presence of anti-CD3. After 4 days proliferation was determined by analyses of thymidine incorporation (A) or CFSE dilution, displayed as MFI values (B). Cultured Treg proliferated in response to HKLP in a dose-dependent manner. Freshly isolated Teff also slightly responded to HKLP, while no effects were observed in cultured Teff. Representative results of 3 independent experiments are shown. The error bars represent standard deviations of duplicate measurements.