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Desmoplasia and fibroblast activation not correlated to KPC survival. (A) Hematoxylin and eosin (H&E) staining revealed heterogeneity in desmoplasia despite equal grading (G2). (B) H&E staining graded according to extent of tumor stroma. (C) Activated stroma index (ASI) calculated from the ratio of α-SMA positive area and collagen positive area and subdivided into quartiles.
