Fig. 3
From: First detection of D181 genotype of infectious bronchitis in poultry flocks of Morocco
Histopathological lesions associated to the infection with the novel D181 genotype in laying hens. (a-b) Trachea with severe extensive loss of cilia and individual cell necrosis (black arrow), congestion (white arrow) and lympho-plasmocytic infiltration in the lamina propria (double-headed arrow). (c) Lung showing multifocal to extensive lymphocytic infiltration of the bronchial wall with accumulation of mucus and desquamated epithelial cell in the bronchial lumen. (d-f) Oviduct with a multifocal lympho-plasmocytic infiltration (double-headed arrow), focal mucosal necrosis and degeneration with desquamation of epithelial cells in the lumen (black arrow), and severe interstitial dilation and edema in the (d) infundibulum (e) isthmus and (f) the shell gland