Fig. 6

Host plasma UA levels regulated by Escherichia coli (E. coli) and Klebsiella pneumoniae (K. pneu). A Animal experimental design for germ-free mice with administration of E. coli or K. pneu. B Paired t test for plasma UA levels of control group between before and after gavage with saline. C Paired t test for plasma UA levels of experiment group between before and after gavage with K. pneu. D Paired t test for plasma UA levels of experiment group between before and after gavage with E. coli. The p values < 0.05 denoted as “ + ”; the p values > 0.05 denoted as “ns”