<prompt> Superantigen includes all, ExceptTSSTExfoliative toxinPyrogenic exotoxinCholera toxin  <response>: Superantigens are ceain protein molecules that activate very large number of T cells irrespective of antigenic specificities They bind directly to the lateral aspect of TCR b chain and activate upto 20 of the circulating T cells compared to conventional 0.001 causing multisystem dysfunction.Examples :Toxic shock syndrome toxinExfoliative toxinStaphylococcal anterotoxinPyrogenic exotoxin 