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Expression of 90K protein and MHC class I in colon cancer cell lines. (a) Western blot showing 90K protein expression in several colon cancer cell lines, including HCT116, SW480, DKO, DLD1, and HCT8. The K562 cell line was used as a negative control. (b) FACS analysis showing MHC class I expression in colon cancer cell lines. FACS, fluorescence-activated cell sorting analysis; MHC, major histocompatibility complex.
