_:b56484454 _:b56484455 . _:b56484457 . _:b56484456 . _:b56484454 . _:b56484454 . _:b56484454 "1"^^ . _:b56484454 . _:b56484457 "costimulatory molecule" . _:b56484456 _:b56484457 . _:b56484455 "C2985420" . _:b56484454 _:b56484456 . _:b56484455 "T116" .