Fig. 2

The global distribution of flavonoids in the diet, feces and plasma of giant pandas and changes in the proportions of subclasses in diet and feces. A Top, Venn diagrams of flavonoids in three sample types. Below, bar plots of flavonoids at the subclass level. Each figure on the bars represents the number of flavonoids in the subclass detected in the corresponding samples. No figures are given when the numbers were less than three. The numbers between diets and feces are the numbers of overlapping flavonoids within each subclass. B Figures on the bars represent the percentages of seven subclasses. Upwards arrow and downwards arrow indicate the percentage in feces was higher and lower than in diet respectively. ***P < 0.001, **P < 0.01, *P < 0.05