tokens: PROBLEM : The clinical significance of the differential expression of estrogen receptor ( ER ) in human monocytes was evaluated .
folded_tokens: problem : the clinical significance of the differential expression of estrogen receptor ( er ) in human monocytes was evaluated .
labels: O O O O O O O O O O B-lipid O O B-protein_family_or_group O O B-cell_type I-cell_type O O O