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Partial least squares-discriminant analysis (PLS-DA) score plots and permutation test for the model discriminating serum samples from resectable and unresectable PDAC patients. (A) POS-PLS-DA score plot; (B) POS-permutation test for the model of PLS-DA; (C) NEG-PLS-DA score plot; (D) NEG-permutation test for the model of PLS-DA: (■) resectable PDAC group, (▲) unresectable PDAC group.
