Epstein-Barr virus ( EBV ) , a human gamma-herpesvirus , can establish both nonproductive ( latent ) and productive ( lytic ) infections .
epstein-barr virus ( ebv ) , a human gamma-herpesvirus , can establish both nonproductive ( latent ) and productive ( lytic ) infections .
B-virus I-virus O B-virus O O O B-virus I-virus O O O O O O O O O O O O O O O