Longitudinal analyses of surface marker expression in mock, HIV-GFP infected and bystander macrophages. Mock- and HIV-GFP infected macrophages were harvested at 7–8 day intervals and stained for flow cytometry for the indicated markers. The day 0 time point is given only for the Mock sample and represents the day of infection. The uninfected or GFP negative cells in the HIV-GFP culture were designated as the bystander MDM (BYSTD). For each group the combined mean percentage of positively stained cells and standard deviations from all three donors is shown. Statistical comparisons were determined by one-way ANOVA with Tukey’s test for multiple comparisons and significance of p < .05. For the receptors shown, no significant differences were found. For the day 43 pi time point, values shown are from a single donor, Do9432.