MHC class II levels in adherent cells from GM-P cultures infected with US2-US11 mutant RV798.

Parallel cultures of GM-Ps were either mock infected or infected with CMV US2-US11 deletion mutant RV798. On day 11 after infection, cells were stained for MHC class II (HLA-DR) with TU36. (A) Flow cytometry plot. (B) MFI of cell surface MHC class II levels.