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Figure 4: Photomicrograph showing bronchial epithelium (black arrow) and subepithelial granulomatous inflammation (a and b, H and E, 4 and 10, respectively). High-power view of the granuloma showing caseous necrosis surrounded by epitheloid cells and Langhans giant cells (c and d, H and E, 20).

Figure 4: Photomicrograph showing bronchial epithelium (black arrow) and subepithelial granulomatous inflammation (a and b, H and E, 4 and 10, respectively). High-power view of the granuloma showing caseous necrosis surrounded by epitheloid cells and Langhans giant cells (c and d, H and E, 20).