Figure 1. Higher level of HIV-1 replication in MDMs than monocytes, regardless of duration of monocyte adherence.
Monocytes were collected and adhered to tissue culture treated flasks for four hours or 24 hours prior to infection with HIV-1 Bal (10 ng p24/1×106 cells). Monocytes were also isolated by adherence for 7 days and maintained in the presence of GM-CSF (100 ng/ml) for seven days prior to HIV-1 infection. Seven days post-HIV-1 infection, HIV-1 p24 was measured by conventional ELISA (A) or intracellular flow cytometry for CD3, CD4, CD14, active β- catenin, and HIV-1 p24 (B). The median percentage of live, CD3-CD14+HIV-1 p24+ cells was determined (B). Data are based on at least three different donors. Asterisk denotes p<0.05 in comparison to first two columns.