Immunology
In immunology, target cells are cells which present the antigenic peptide combined with MHC class I molecules to Cytotoxic T cells. These cells have MHC molecules on their surface (in contrast to Antigen Presenting Cells, which in addition also have MHC class II molecules). Target Cells are the normal cells of the body which have undergone some alteration and synthesize abnormal proteins e.g. tumor cells, virus infected cells.
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