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. 2017 Mar 3;7:43627. doi: 10.1038/srep43627

Figure 2. Representative IHC staining of PD-L1 in NPC-biopsies.

Figure 2

(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 100 μm and for c-d are 50 μm.