A series of hybrid DRA/DQB reporter constructs was generated to further map the relevant cis-elements in this system .
a series of hybrid dra/dqb reporter constructs was generated to further map the relevant cis-elements in this system .
O O O B-DNA_family_or_group I-DNA_family_or_group B-DNA_family_or_group I-DNA_family_or_group O O O O O O O B-DNA_family_or_group O O O O