<prompt> Superantigen include all, except:TSSTExfoliative toxinPyrogenic exotoxinCholera toxin  <response>: Superantigens are certain proteinmolecules that activate very large number of T cells irrespective of antigenic specifitiesThey bind directly to lateral aspect of TCR β 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 