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present protein fragments to cytotoxic T cells for immune response

MHC class I, or Major Histocompatibility Complex class I, are molecules found on the surface of almost all nucleated cells in the body. They play a crucial role in the immune system by presenting small fragments of proteins (peptides) from inside the cell to cytotoxic T cells. This helps the immune system recognize and destroy infected or cancerous cells.

Related Terms

• MHC class II
• antigen presentation
• HLA class I
• MHC Class II
• HLA Class I
• MICA
• MHC Class I Polypeptide-Related Sequence B
• Major Histocompatibility Complex
• Human Leukocyte Antigen
• HLA-DR