CD209 and infection: RhIL-1β increases expression of DC-SIGN also in CIHPs stably transfected with either WT or G1/G2 APOL1 Vs (Fig. 4b), therefore, we used this experimental model to test the direct impact of rhIL-1β priming on HIV-1 entry and trans-infection to CD4pos T lymphocytes in the context of APOL1 polymorphism.