FIG 8.

Virus neutralization of antigen-sorbent column-selected IgGs. Anti-gD, anti-gB, and flowthrough (“other”) IgGs were obtained as outlined in the legend to Fig. 7. IgGs were tested for their ability to neutralize HSV-2 (A) or HSV-1 (B). Samples 6, 7, and 10 were from HSV-1 and HSV-2 dual-seropositive individuals, while sample 4 was from a person infected with HSV-2 only. Plaque numbers were determined for each sample and plotted as a percentage of plaques obtained in the absence of human IgG (y axis). IgG concentration is indicated on the x axis.