Fig. 3. Evaluation of BPV-VRP vaccine with the BPV-KB tumour model. The per cent tumour-free BPV-VRP-vaccinated BALB/c mice (n = 10; ▪) or GFP-VRP-vaccinated BALB/c mice (n = 5; ○) against days after challenge with BPV-KB tumour cells is presented. (P < 0.05, log-rank test.).