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. 2019 Sep 18;20:714. doi: 10.1186/s12864-019-6074-6

Fig. 4.

Fig. 4

Partial-Least Squares Discriminant Analysis (PLS-DA) scores plot of metabolite profiles generated by GC–MS analysis of bull spermatozoa from high (HF) and low fertility (LF) bulls. Plots showed a clear cluster distinction between HF (n = 5) and LF (n = 5) groups. Supervised PLS-DA was obtained with 2 components. The explained variances are shown in parentheses