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. Author manuscript; available in PMC: 2014 Mar 15.
Published in final edited form as: Cancer Res. 2013 Jan 3;73(6):1733–1741. doi: 10.1158/0008-5472.CAN-12-2384

Figure 4. Co-localization of TILs with PD-L1 expression in HPV-HNSCC.

Figure 4

A. Hematoxylin and eosin stain of HPV-HNSCC (thin arrow marks tumor nests and thick arrow marks inflammatory stroma). Serial sections evaluated for: B, CD3; C, CD4; D, CD8; E, PD-L1; and F, CD68 expression. Red arrows indicate a representative area with clusters of PD-L1 and CD68 expression in serial sections (E, F). Magnification, 400x.