Figure 1. IFN-γ suppression by the novel benzoxazole derivatives DCPAB and HPAB.

(a) Chemical structure of DCPAB and HPAB. (b) Spleen cells were stimulated with anti-CD3 Ab (1 μg/ml) for 24 h in the presence of either DCPAB or HPAB. Cell supernatants were used for measuring IFN-γ by ELISA. (c) Spleen cells were treated with DCPAB and HPAB for 24 h and subjected to cytotoxicity assay.