A few viruses , like the Herpesviruses or the papillomaviruses , however , have developed a sophisticated strategy for persisting lifelong , usually asymptomatically in the host , hiding from the immune system and producing infectious progeny at the same time .
a few viruses , like the herpesviruses or the papillomaviruses , however , have developed a sophisticated strategy for persisting lifelong , usually asymptomatically in the host , hiding from the immune system and producing infectious progeny at the same time .
O O O O O O B-virus O O B-virus O O O O O O O O O O O O O O O O O O O O O B-body_part I-body_part O O B-virus I-virus O O O O O