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Staining patterns, histoscoring for miR-21 expression and quantifications. A. Expression of miR-21 in pancreatic ductal adenocarcinoma and normal pancreatic tissue as detected by chromogenic in-situ hybridization. B. Representation of miR-21 in the training cohorts with median range and histoscore level of 45. C. Depicted of Kappa coefficient (κ) to measure inter-observer agreement and developing an Altman scale of agreement.
