Article
Total loss of MHC class I in colorectal tumors can be explained by two molecular pathways: β2‐microglobulin inactivation in MSI‐positive tumors and LMP7/TAP2 downregulation in MSI‐negative tumors
1 Mar 2003
Abstract excerpt
The mechanisms that lead to loss of MHC class I expression in different types of tumors are not yet fully known. Accordingly, we studied colorectal carcinomas to elucidate the specific mechanisms of evasion of the T-cell immune response. We selected tumors with total loss of MHC class I expression and studied 124 colorectal carcinomas with immunohistochemical staining and anti-HLA monoclonal antibodies (mAb)....
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