tokens: Therefore , we have constructed a single cDNA that encodes a single-chain protein , called Flexi-12 , which retains all of the biological characteristics of recombinant IL-12 ( rIL-12 ) .
folded_tokens: therefore , we have constructed a single cdna that encodes a single-chain protein , called flexi-12 , which retains all of the biological characteristics of recombinant il-12 ( ril-12 ) .
labels: O O O O O O O B-DNA_family_or_group O O O B-protein_family_or_group I-protein_family_or_group O O B-protein_molecule O O O O O O O O O O B-protein_molecule O B-protein_molecule O O