tokens: These studies suggest that interaction of CD2 with its natural ligand , LFA-3 , may play a role in regulation of HIV expression .
folded_tokens: these studies suggest that interaction of cd2 with its natural ligand , lfa-3 , may play a role in regulation of hiv expression .
labels: O O O O O O B-protein_molecule O O O B-other_name O B-protein_molecule O O O O O O B-other_name O B-other_name I-other_name O