Figure 3.

Histopathologic analysis of tissues from 1-day-old chickens infected with infectious bronchitis virus CK/CH/JS/TAHY strain. (A) Kidney tissues with severe renal lesions including hemorrhages, degeneration, multifocal necrosis of the renal tubules and inflammatory cell infiltration. Solid arrows indicate degeneration and inflammatory cell infiltration. (C) Trachea tissues illustrating loss of cilia, sloughing of epithelial cells, and edema of lamina propria. Solid arrows indicate sloughing of epithelial. (E) Lung tissues with hemorrhages, congestion, and lymphocytic infiltration in the alveolar lumen. Solid arrows indicate hemorrhages and congestion. Panels (B), (D), and (F) correspond to negative control tissues. Hematoxylin and eosin staining.