Figure 6: (A)- Lymphocytic infiltration of lamina propria of bronchus; PSCPseudostratified columnar epithelium; GC- Goblet Cell; G- Gland; A- Arteriole; HEV-High Endothelial Venule; PC-Plasma Cell. (B)- Diffuse lymphoid tissue scattered among the glands in the wall of a bronchus; LP- Lamina Propria; ML- Muscular Layer, G- Gland; D- Duct; M- Macrophage; H&E stain.