Figure 2: Representative IHC staining of PD-L1 in NPC-biopsies.
From: PD-L1 predicts poor prognosis for nasopharyngeal carcinoma irrespective of PD-1 and EBV-DNA load
(a,c) PD-L1 staining in a biopsy from an NPC patient evaluated as having a low level of PD-L1. The IHC photos were taken using phase-contrast microscopy and are shown at low (a) and high magnification (c). (b,d) PD-L1 staining in a biopsy from an NPC patient evaluated as having a high level of PD-L1. The IHC photos are shown at low (b) and high magnification (d). PD-L1 expressed in tumour-infiltrating lymphocytes in a scattered manner. The scale bars for a-b are 100āĪ¼m and for c-d are 50āĪ¼m.
