Interactions of a transcriptional activator in the env gene of the mouse mammary tumor virus with activation-dependent , T cell-specific transacting factors .
interactions of a transcriptional activator in the env gene of the mouse mammary tumor virus with activation-dependent , t cell-specific transacting factors .
O O O B-DNA_domain_or_region I-DNA_domain_or_region O O B-DNA_domain_or_region I-DNA_domain_or_region O O B-virus I-virus I-virus I-virus O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O