Figure 3.

Gross pathological lesions in the proventriculus of chickens infected with NDV. (a) The proventriculus of control chickens showing normal appearance (a). The proventriculus of infected chickens showing several ecchymotic hemorrhages on the tip of the proventricular glands at 3 dpi (b), edema with increased number of solitary and coalesced ecchymotic hemorrhages on the proventricular glands at 4 dpi (c), and numerous hemorrhagic spots coalesced to form brush paint appearance on the entire mucosa at 5 dpi (d).