The transcriptional enhancer located in the first intron of the immunoglobulin heavy chain constant region is a major determinant of B-cell-specific expression of immunoglobulin genes .
the transcriptional enhancer located in the first intron of the immunoglobulin heavy chain constant region is a major determinant of b-cell-specific expression of immunoglobulin genes .
O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O O O O B-other_name B-other_name O B-DNA_family_or_group I-DNA_family_or_group O