FIG. 2.
Flow cytometric analysis for MHC class I (A) and ICAM-1 (B) expression on HT1080 cells by simultaneous treatment with IFN-γ and infection with HPIV3. HT1080 cells (5 × 105 cells/ml) were either untreated or incubated in the presence of IFN-γ (100 U/ml) and were harvested after 48 h of culture for MHC class I and ICAM-1 assays. Untreated cells served as the control. In each panel, the MFI and the percentage of cells staining for MHC class II are indicated. Results are representative of three independent assays. NT, not treated.