Cells and cell lines of this study, their genomic types and semi-quantitative cell-surface expression of HLA class I.

aSurface expression based on direct flow cytometry, only data from relevant combinations of antisera and genomic types are shown. NA = Not Analyzed, “−” = the specific mean fluorescence intensity (MFI) is ≤3 times higher than the MFI of the isotype control “+/−” = <10 times, “1+” = ≥10 times, “2+” = ≥30 times, “3+” = ≥50 times and “4+” = ≥100 times.