tokens: Dendritic cells and autologous CD4 + T cells were isolated from peripheral blood by a series of density-gradient centrifugations or magnetic bead separations ( or both ) .
folded_tokens: dendritic cells and autologous cd4 + t cells were isolated from peripheral blood by a series of density-gradient centrifugations or magnetic bead separations ( or both ) .
labels: B-cell_type I-cell_type O B-cell_type B-protein_molecule O O O O O O B-tissue I-tissue O O O O B-other_name I-other_name O O O O O O O O O