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  Indian J Med Microbiol
 

Figure 1: Histopathological examination of all groups. (a and b) control group; sills observed on the surface of epithelial cells (arrows) and goblet cells distinguished with purple excretes (arrowhead). (c) Goblet cells secretion is increased in Group 2. (d) Group 3, loss of tracheal epithelium in places. (e) Group 4, diffuse lymphoid infiltration on lamina propria (star). (f) Group 5, loss of cilia and irregularities in epithelium due to the loss of the apical epithelial surface. (g) Group 6, single-layered appearance of the tracheal epithelial (arrows). (h) Group 7, increase in goblet secretion and minimal disruption of the epithelial layout. (i), Group 8, single-layered appearance of epithelial, clear loss of cilia (arrows), and lymphoid infiltration followed on lamina propria (star). (j) In Group 9, it was observed that tracheal epithelium is preserved except the epithelial sheddings in the apical surface of the epithelial cells and loss of cilia in some areas PAS-H, ×40

Figure 1: Histopathological examination of all groups. (a and b) control group; sills observed on the surface of epithelial cells (arrows) and goblet cells distinguished with purple excretes (arrowhead). (c) Goblet cells secretion is increased in Group 2. (d) Group 3, loss of tracheal epithelium in places. (e) Group 4, diffuse lymphoid infiltration on lamina propria (star). (f) Group 5, loss of cilia and irregularities in epithelium due to the loss of the apical epithelial surface. (g) Group 6, single-layered appearance of the tracheal epithelial (arrows). (h) Group 7, increase in goblet secretion and minimal disruption of the epithelial layout. (i), Group 8, single-layered appearance of epithelial, clear loss of cilia (arrows), and lymphoid infiltration followed on lamina propria (star). (j) In Group 9, it was observed that tracheal epithelium is preserved except the epithelial sheddings in the apical surface of the epithelial cells and loss of cilia in some areas PAS-H, ×40