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. 2017 May 29;6(7):1673–1685. doi: 10.1002/cam4.1108

Figure 4.

Figure 4

PD‐1 and PD‐L1 expression in different squamous cell carcinomas stratified by disease state. (A) Percent of samples positive for PD‐1 expression on tumor infiltrating lymphocytes as determined by IHC. For primary tumors, n = 25 (ASCC), n = 79 (CSCC), n = 31 (OSCC), n = 15 (VSCC). For regional metastases, n = 20 (ASCC), n = 54 (CSCC), n = 9 (OSCC), n = 2 (VSCC). For samples from lymph nodes, n = 5 (ASCC), n = 19 (CSCC), n = 11 (OSCC), n = 9 (VSCC). For distant metastases, n = 10 (ASCC), n = 22 (CSCC), n = 11 (OSCC), n = 2 (VSCC). (B) Percent of tumor samples positive for PD‐L1 expression by IHC. For primary tumors, n = 33 (ASCC), n = 90 (CSCC), n = 34 (OSCC), n = 16 (VSCC). For regional metastases, n = 23 (ASCC), n = 63 (CSCC), n = 10 (OSCC), n = 3 (VSCC). For samples from lymph nodes, n = 5 (ASCC), n = 24 (CSCC), n = 11 (OSCC), n = 9 (VSCC). For distant metastases, n = 10 (ASCC), n = 24 (CSCC), n = 11 (OSCC), n = 2 (VSCC).