Evaluation of C14 inhibitory activity on HIV-1 DNA content into primary cells. Monocyte-derived macrophages (A), monocyte-derived dendritic cells (B) and T cells (C) were incubated with R5 or X4 viruses in the presence of increasing concentrations of C14 or an unique dose of T 20 (5 μM) for 3 hours at 37°C. Cells were then washed and cultured in fresh medium for 3 days. DNA was extracted and the viral DNA was quantified by real time PCR. Means are representative of 3 independent experiments and assays were performed in triplicates. *, p ≤ 0.05; **, p ≤ 0.01 between untreated and treated cells.