Fig. 2.

Macroscopic pathologic lung lesions in vaccinated calves following challenge with BRSV. Calves were immunized as described in Fig. 1 and macroscopic lung lesions determined on PID 6. Visible macroscopic lesions were photographed and together with palpable lesions were recorded on a standard lung diagram. These lung diagrams were scanned and a lesion percentage was calculated by digital counting. Standard deviations are shown by upward deflection lines. The star indicates a statistically significant difference between the BRSV-ISCOM and the PBS (c) group, p ≤ 0.05 (*).