Fig. 5From: T cell exhaustion is associated with the risk of papillary thyroid carcinoma and can be a predictive and sensitive biomarker for diagnosisThe expression of PD-L1 in NG&noHT, NG&HT, PTC&noHT and PTC&HT tissues. A. NG&noHT (400×). B. NG&HT (400×). C. PTC&noHT (400×). D. PTC&HT (400×)Back to article page