Internal ribosomal binding requires a cis-acting element termed the internal ribosomal entry site ( IRES ) .
internal ribosomal binding requires a cis-acting element termed the internal ribosomal entry site ( ires ) .
O B-other_name I-other_name O O B-DNA_domain_or_region I-DNA_domain_or_region O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O B-DNA_domain_or_region O O