What are the primary functions of both CD4 and CD8 T cells? Which MHC molecules do they utilize (MHC Class I or II) and what types of antigens do they respond to (endogenous or exogenous)? Why is this important to their function?
CD is the norm, used to depict the cluster of differentiation, a kind of glycoprotein, found at the surface of cells. CD4 protein present in T-Helper cells which act to support maturation of B cells into plasma cells and memory B cells, and activation of cytotoxic T cells and macrophages. they are presented with peptide antigens by MHC class II molecules, which are expressed on the surface of antigen-presenting cells (APCs). While CD8 molecules present at in T-killer cell, which is responsible for the destruction of virus-infected cells and tumor cells, as well as implicated in transplant rejection. They are targets by binding to the antigen associated with MHC class I molecules, which are present on the surface of all nucleated cells
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