FIG. 2.

Protection from CRPV challenge in experiment 1. Average percentages of papilloma-free sites and average papilloma volumes (natural log) after CRPV challenge were determined in rabbits immunized once with intranasal VSV-L1 vaccine (gray bar and ▴), rabbits immunized once with intranasal VSV-GFP vaccine (diagonal line bar and ▪), and unimmunized control rabbits (black bar and ×). The results for high-challenge (A), moderate-challenge (B), and low-challenge (C) CRPV doses are shown. Error bars represent standard errors of the mean.