Microbiology The role played by major histocompatibility complex proteins (MHC-1 and MHC-2) is to – A Transduce the signals to T cells following antigen recognition B Mediate immunoglobulin class-switching C Present antigens for recognition by T cell antigen receptors D Enhance the secretion of cytokines 💡 Explanation The role played by major histocompatibility complex proteins (MHC-1 and MHC-2) is to - ✓ Correct Answer: C. Present antigens for recognition by T cell antigen receptors