Fig. 3: Representative photomicrographs of three cases of choriocarcinoma.
From: PD-L1 and PD-1 expression in pediatric central nervous system germ cell tumors
A H&E staining shows the typical histology of cytotrophoblasts and syncytiotrophoblasts. B PD-L1 staining is strong and diffuse in tumors cells. C PD-1 is positive in scattered lymphocytes in tumor cells.
