FIG. 3.
Effects of fp/cMGF and fp/M3 on survival of HVT-vaccinated chickens and unvaccinated chickens inoculated with RB-1B. Two-week-old B13/B13 chickens (12 chickens per group) were inoculated with fp/cMGF or fp/M3 vector (105 PFU per chicken) or left untreated. Vaccination with HVT (1,000 PFU per chicken) was performed 4 days after fowlpox virus inoculation, and RB-1B was inoculated 3 days later (i.e., 7 days after inoculation). All nonvaccinated chickens died by 5 weeks after RB-1B challenge. All remaining HVT-vaccinated chickens were sacrificed 13 weeks after RB-1B challenge.