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Examples of PAR-1 (A, C, E) and PAR-2 (B, D, F) expression in human gastric carcinoma (A–B), undifferentiated carcinoma (C–D), and lung adenocarcinoma (E–F) tissues. Large arrowheads indicate positive immunolabeling in the tumor cells and small arrowheads indicate positive immunolabeling in the stromal fibroblasts. Arrows indicate PAR-1 or PAR-2 positive immunolabeling in macrophages. Original magnification, ×600.
