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. Author manuscript; available in PMC: 2014 Jul 1.
Published in final edited form as: Cancer Immunol Res. 2013 Jul;1:10.1158/2326-6066.CIR-13-0034. doi: 10.1158/2326-6066.CIR-13-0034

Figure 2.

Figure 2

Constitutive PD-L1 expression in MCC. Only one among 29 PD-L1+ MCC specimens demonstrated diffuse membranous expression by tumor cells that was out of proportion to the scant number of infiltrating CD3+ T lymphocytes. Orange arrows point to CD3+ T lymphocytes. Original magnification 400x, all panels.