Identification of the promoter region of chicken anemia virus ( CAV ) containing a novel enhancer-like element .
identification of the promoter region of chicken anemia virus ( cav ) containing a novel enhancer-like element .
O O O B-DNA_domain_or_region I-DNA_domain_or_region O B-virus I-virus I-virus O B-virus O O O O B-DNA_family_or_group I-DNA_family_or_group O