. . . . . . . . . . . . . . . . . . . . . . . . . . . . . "tnr21_human"^^ . "TNFRSF21"^^ . "DR6"^^ . "Death receptor 6"^^ . "UNQ437/PRO868"^^ . . . . . . "Tumor necrosis factor receptor superfamily member 21"^^ . . . .