The 1 . 955-kb viral segment includes a dyad symmetry region located between two small nuclear RNA genes and is located upstream of the dihydrofolate reductase gene homolog .
the 1 . 955-kb viral segment includes a dyad symmetry region located between two small nuclear rna genes and is located upstream of the dihydrofolate reductase gene homolog .
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 B-DNA_substructure I-DNA_substructure I-DNA_substructure O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O O O O O B-protein_molecule I-protein_molecule O O O