tokens: The mRNA for the Duffy blood group antigen , the erythrocyte receptor for the Plasmodium vivax malaria parasite , has recently been cloned and shown to encode a widely expressed chemokine receptor .
folded_tokens: the mrna for the duffy blood group antigen , the erythrocyte receptor for the plasmodium vivax malaria parasite , has recently been cloned and shown to encode a widely expressed chemokine receptor .
labels: O B-RNA_family_or_group O O B-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule O O B-protein_family_or_group I-protein_family_or_group O O B-multi_cell I-multi_cell I-multi_cell O O O O O O O O O O O O O B-protein_family_or_group I-protein_family_or_group O