tokens: Using tetanus toxoid specific and HLA-DR-restricted T lymphocytes , we show that polarized intestinal epithelial cells directed to express HLA-DR molecules are able to initiate class II processing only after internalization of antigen from their apical surface .
folded_tokens: using tetanus toxoid specific and hla-dr-restricted t lymphocytes , we show that polarized intestinal epithelial cells directed to express hla-dr molecules are able to initiate class ii processing only after internalization of antigen from their apical surface .
labels: O O O O O O O O O O O O B-cell_type I-cell_type I-cell_type I-cell_type O O O B-protein_family_or_group I-protein_family_or_group O O O O B-other_name I-other_name I-other_name O O O O O O O O O O