tokens: The hormone receptors of the primary tumor were known in 15 ( ER ) and 14 ( PR ) patients , respectively .
folded_tokens: the hormone receptors of the primary tumor were known in 15 ( er ) and 14 ( pr ) patients , respectively .
labels: O B-protein_family_or_group I-protein_family_or_group O O B-tissue I-tissue O O O O O B-protein_family_or_group O O O O B-protein_family_or_group O B-multi_cell O O O