tokens: We therefore created and studied a T cell line expressing the cloned delta-opioid receptor ( DOR1 ) .
folded_tokens: we therefore created and studied a t cell line expressing the cloned delta-opioid receptor ( dor1 ) .
labels: O O O O O O B-cell_line I-cell_line I-cell_line O O B-protein_molecule I-protein_molecule I-protein_molecule O B-protein_molecule O O