tokens: Initial signaling through the CD4 receptor played a major role in the sensitization of HIV-infected T cells to undergo apoptosis .
folded_tokens: initial signaling through the cd4 receptor played a major role in the sensitization of hiv-infected t cells to undergo apoptosis .
labels: O O O O B-protein_molecule O O O O O O O O O B-cell_type I-cell_type I-cell_type O O B-other_name O