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Figure 3: (a) Dense collagen fibrous tissue with pathological changes of focal collapse and granular necrosis, (H and E staining, � 400); (b) A focus infiltrated by many inflammatory cells, (H and E staining, � 400); (c, d) Special stains (silver staining and PAS staining, � 400) for detecting fungi were negative

Figure 3: (a) Dense collagen fibrous tissue with pathological changes of focal collapse and granular necrosis, (H and E staining, × 400); (b) A focus infiltrated by many inflammatory cells, (H and E staining, × 400); (c, d) Special stains (silver staining and PAS staining, × 400) for detecting fungi were negative