passages.id: split_5_test_1740_passage
passages.type: progene_text
passages.text: The heterotrimeric lymphotoxin alpha(1)beta(2) ( LTalpha(1)beta(2) ) complex and LIGHT , a new member of the tumor necrosis factor ( TNF ) superfamily , have been identified as membrane - anchored ligands for the LTbeta receptor ( LTbetaR ) , a member of the TNF receptor ( TNFR ) superfamily .