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Overview of tumor and microenvironmental compartments analyzed. Representative H&E (top panel) and immunohistochemical (bottom panel) staining of prostate cancer for CD45 showing the three compartments intratumoral (IT), extratumoral 1 (ET1) and extratumoral 2 (ET2) used in this study. The red circle stands for a representative high-power field (40-fold objective, 500 µm in diameter) in the ET1 compartment. The scale bar represents 500 µm
