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Orthogonal partial least-squares discriminant analysis (OPLS-DA) scores plot based on 1H NMR spectra of rumen fluid obtained from different groups. PLS-DA profiles between A and B (a); PLS-DA profiles between A and C (b); PLS-DA profiles between B and C (c). Each point on the score chart represents a sample. Control (A): black squares; AFB20 group (B): purple triangles; AFB40 group (C): yellow triangles.
