Figure 2
From: Bile metabolites as diagnostic biomarkers for perihilar cholangiocarcinoma
Metabolite classification in POS (A) and NEG (B) models. The identified metabolites were annotated with classification by reference to the KEGG and HMDB databases. The X axis represented the number of metabolite classifications, and the Y axis represented the metabolite classification items. Others meant that the classification information was the rest of the categories, and the identification results without the classification information were not included in the statistics.
