. . . . . . . "Antibodies raised against the human fusion regulatory protein 1 (FRP-1; CD98) molecule suppress cell fusion mediated by HIV-1 gp160" . "Co-cultivation of PBMC with HIV-1 gp160-expressing HeLa cells results in the increased expression of FRP-1 on T cells" . "HIV-1 gp120 has the ability to induce expression of FRP-1 on peripheral blood mononuclear cells (PBMC)" . "interacts with" . "upregulates" .