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(A) Liver biopsy patient 1. Portal tract granuloma (arrow) and inflammatory cell infiltrate. (Haematoxylin and eosin stain, original magnification ×400.) (B) Skin biopsy patient 1. Occluded artery in subcutaneous fat with adventitial inflammation. (Haematoxylin and eosin stain, original magnification ×400.)
