Figure 9.

Effects of influenza virus, tryptophan and Lactobacillus supplement on the expression of (A) Enterobacteriaceae and (B) Lactobacillus in the intestine. Each dot represents data from one animal. Data are mean ± SEM. n = 3. Con: Female BALB/c mice aged 6 to 7 weeks (20 ± 2 g) were treated with PBS; Inf group: Female BALB/c mice aged 6 to 7 weeks (20 ± 2 g) were mice treated with influenza virus infection; Trp group: Female BALB/c mice aged 6 to 7 weeks (20 ± 2 g) were treated with exogenous tryptophan supplement; Lac group: Female BALB/c mice aged 6 to 7 weeks (20 ± 2 g) were treated with exogenous Lactobacillus supplement. Statistical analysis was performed by independent samples T test. *P < 0.05; **P < 0.01. All replicates are biological.