+CD8 is a cell surface [protein](/wiki/Protein) primarily found on cytotoxic [T cells](/wiki/T_cell). It acts as a coreceptor, guiding these immune cells to recognize and eliminate threats presented by [MHC class I](/wiki/MHC_class_I) molecules, a vital part of the body's adaptive defense.
+## See also
+- [Cytotoxic T cell](/wiki/Cytotoxic_T_cell)
+- [Immune system](/wiki/Immune_system)
+- [Lymphocyte](/wiki/Lymphocyte)
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