Fig. 2
From: Urinary metabolomics reveals the biological characteristics of early pregnancy in pigs
Pie chart showing the percentages of diverse urine metabolites based on counts of HMDB chemical taxonomy (“Super class”). The selected HMDB level (“Super class”) and the percentage of metabolites are displayed in a descending order. Different colors on the pie chart represent different HMDB categories while the area represents relative proportions of metabolites in that category