antibody titers to epstein-barr virus ( ebv ) -associated early antigens ( ea ) and the viral capsid antigen ( vca ) were determined by elisa on 263 sera obtained from healthy donors , patients with hodgkin 's disease ( hd ) , non-hodgkin lymphomas ( nhl ) , infectious mononucleosis ( im ) , burkitt 's lymphoma ( bl ) , and nasopharyngeal carcinoma ( npc ) .
C0003320
antigens
C0003342
viral