Figure 4.

IFN-γ secretion by tumor-infiltrating cells. TILs purified from α-GalCer-treated and Vehicle-treated mice were cultured with 1 × 10⁴ target cells for 24 h and supernatants were collected for IFN-γ ELISA. Each sample of α-GalCer-treated and Vehicle-treated group is shown. Filled symbols: TILs from α-GalCer-treated mice, Open symbols: TILs from Vehicle-treated mice. Representative data of two experiments are shown.