tokens: Intestinal epithelial cells can express HLA class II antigens and may function as antigen-presenting cells to CD4 ( + ) T cells within the intestinal mucosa .
folded_tokens: intestinal epithelial cells can express hla class ii antigens and may function as antigen-presenting cells to cd4 ( + ) t cells within the intestinal mucosa .
labels: B-cell_type I-cell_type I-cell_type O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O O O O B-cell_type I-cell_type I-cell_type I-cell_type I-cell_type I-cell_type I-cell_type I-cell_type I-cell_type O O B-tissue I-tissue O