Fig. 5From: Sarcoidosis in the setting of combination ipilimumab and nivolumab immunotherapy: a case report & review of the literaturePD-L1 Staining of Pre-Tibial Soft Tissue Nodule. PD-L1 antibody stained section of the granulomatous inflammation shows strong membranous staining of the histiocytes within the granulomas and scattered positive lymphocytes (a, 4×; b, 20×)Back to article page