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(A) Partial least-squares discriminant analysis (PLS-DA) score plots obtained from metabolomic profiles of a Klebsiella pneumoniae biofilm and a dual-species biofilm of Candida albicans/Klebsiella pneumonia. (B) Variable importance in the projection (VIP) chart of metabolites that contribute to separating the biofilm cultures. Metabolites significantly affecting between-class discrimination are the ones with VIP scores of >1.
