. . . . "HIV-1 gp120 upregulates the expression of C1q globular domain-binding protein in umbilical cord blood mononuclear cells" . "HIV-1 gp41 S3 motif engages gC1qR on CD4+ T cells to induce the expression of an NK ligand (NKp44L) through the PIP3/H2O2 pathway" . "upregulates" . "activates" .