tokens: These observations demonstrate that CD4 signaling mediates HIV-induced apoptosis by a mechanism independent of Fas -Fas ligand interaction , does not require p56 ( lck ) signaling , and may involve a critical region for CD4 dimerization .
folded_tokens: these observations demonstrate that cd4 signaling mediates hiv-induced apoptosis by a mechanism independent of fas -fas ligand interaction , does not require p56 ( lck ) signaling , and may involve a critical region for cd4 dimerization .
labels: O O O O B-protein_molecule O O B-other_name I-other_name O O O O O B-protein_molecule B-protein_molecule I-protein_molecule O O O O O B-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule O O O O O O O O O B-protein_molecule O O