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

Fig. 3.

Fig. 3

Abundance ratios of the most and least predominant metabolites present in bull spermatozoa. a Abundance ratios of the five most abundant metabolites such as oleic acid, phosphoric acid, phosphine, carbamate, and glycerol. b Abundance ratios of the five least metabolites identified as benzoic acid, acetic acid, L-serine, carbamate, and 2-ketobutyric acid. The abundance ratio of the metabolites was calculated by dividing the abundance of target ions of metabolites by that of target ion of the internal standard. Error bars represent standard error of the mean. P < 0.05 was considered significant