Identification of nucleotide sequences that regulate transcription of the MCF13 murine leukemia virus long terminal repeat in activated T cells .
identification of nucleotide sequences that regulate transcription of the mcf13 murine leukemia virus long terminal repeat in activated t cells .
O O B-DNA_family_or_group I-DNA_family_or_group O O O O O B-virus I-virus I-virus I-virus B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O B-cell_type I-cell_type O