tokens: Immunohistochemical evidence of low proliferative activity and virtual absence of mutation of the p53 tumor-suppressor gene .
folded_tokens: immunohistochemical evidence of low proliferative activity and virtual absence of mutation of the p53 tumor-suppressor gene .
labels: B-other_name I-other_name O B-other_name I-other_name I-other_name O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O