FIG. 6.

Plasma inhibition of recognition and binding of MAb 3G8 to CD16. PBMC from macaques were incubated with increasing amounts of plasma from macaque 99P006 or 98P016, and the residual percentages of CD16⁺ cells (A) and the respective MFIs of CD16 (B) were evaluated. The data points represent mean values for plasma samples from each animal; plasma collected from 99P006 and 98P016 at 39 and 47 weeks after infection, respectively, was tested with PBMC from three different macaques. Plasma samples collected from 99P006 before infection were tested on two occasions with PBMC from three different macaques (n = 6).