From:  Retrospective immunophenotypical evaluation of MET, PD-1/PD-L1, and mTOR pathways in primary tumors and pulmonary metastases of renal cell carcinoma: the RIVELATOR study addresses the issue of biomarkers heterogeneity

Histopathological images of the tumors. (A) Clear-cell RCC, primary tumor (40× magnification); (B) clear-cell RCC, primary tumor (40× magnification); (C) pulmonary metastasis of RCC (20×, magnification)