As compared with other open-reading frames embedded into HIV/SIV genome , this degree of stability is unprecedented .
as compared with other open-reading frames embedded into hiv/siv genome , this degree of stability is unprecedented .
O O O O B-DNA_family_or_group I-DNA_family_or_group O O B-DNA_family_or_group I-DNA_family_or_group O O O O O O O O