FIG. 6.

EV neutralization activity detected in anti-vaccinia virus hyperimmune sera. (A) Comet inhibition assays were performed using Vero cell monolayers infected with vaccinia virus (IHD-J) that were overlaid with medium alone, medium containing methyl cellulose (MC), or medium containing a 1/50 dilution of hyperimmune sera generated against Dryvax in mice (anti-Dryvax) or humans (Dryvax-VIG); (B) infected Vero cell monolayers were overlaid with medium containing a 1/50 dilution of mouse hyperimmune antisera anti-MV, anti-A5Lint, and anti-Dryvax (described in Fig. 3 legend). α, anti.