tokens: The v-erb A oncogene of avian erythroblastosis virus is a mutated and virally transduced copy of a host cell gene encoding a thyroid hormone receptor .
folded_tokens: the v-erb a oncogene of avian erythroblastosis virus is a mutated and virally transduced copy of a host cell gene encoding a thyroid hormone receptor .
labels: O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O B-virus I-virus I-virus O O O O O O O O O B-DNA_family_or_group I-DNA_family_or_group I-DNA_family_or_group O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O