tokens: We have purified these activities and found that the principal IL-2 -inducible component bears significant relatedness to a prolactin-induced transcription factor first identified in sheep mammary gland tissue .
folded_tokens: we have purified these activities and found that the principal il-2 -inducible component bears significant relatedness to a prolactin-induced transcription factor first identified in sheep mammary gland tissue .
labels: O O O O O O O O O O B-protein_molecule O O O O O O O B-protein_molecule I-protein_molecule I-protein_molecule O O O B-cell_type I-cell_type I-cell_type I-cell_type O