Fig. 6

Histopathologic changes of ducklings after DTMUV infection. Groups of 10 ducks were intramuscularly challenged with 10^4.6 ELD₅₀ of the DTMUV AH-F10 strain at 2 weeks after the second immunization. At 2 weeks post-challenge, all ducklings were bled and euthanized and their ovaries (lung, spleen, liver and brain) were collected for histopathologic examination