When submitted to an in vitro CD4 cross-linking by iHIV-1 , PBMCs from HIV-1 -infected patients were found to produce virus .
when submitted to an in vitro cd4 cross-linking by ihiv-1 , pbmcs from hiv-1 -infected patients were found to produce virus .
O O O O B-other_name I-other_name B-protein_molecule O O B-virus O B-cell_type O B-virus O B-multi_cell O O O O O O