Fig 5. Partial least-squares discriminant analysis (PLS-DA) for the intestinal metabolic profiles.

(A) was in the positive ion mode and (B) in negative ion mode between the intestinal functional disorder adult zebrafish (model) and normal (untreated); and (C) was in the positive ion mode and (D) in negative ion mode between the intestinal functional disorder adult zebrafish (model) and the model zebrafish treated with B. lactis BL-99 at 2.42*10⁷ CFU/mL (BL-99-10-7). These ellipses represented the 95% confidence region.