tokens: Stat5 and Stat6 are transcription factors active in mammary epithelial cells and immune cells .
folded_tokens: stat5 and stat6 are transcription factors active in mammary epithelial cells and immune cells .
labels: B-protein_molecule O B-protein_molecule O B-protein_family_or_group I-protein_family_or_group O O B-cell_type B-cell_type I-cell_type O O O O