using immunofluorescent antibody method , seropsitive rates of the antibody titers against viral capsid antigens ( vca ) and early antigens ( ea ) of epstein-barr ( eb ) virus were 70.8 % -100 % for anti-vca/igg titers ( greater than or equal to 1:640 ) , 81.0 % -100 % for anti-vca/iga titers ( greater than or equal to 1:40 ) , 66.7 % -93.8 % for anti-ea/igg titers ( greater than or equal to 1:160 ) , and 40.0 % -87.5 % for anti-ea/iga titers ( greater than or equal to 1:40 ) in npc patients with disease .
C0003342
vca
C0003320
ea