Figure 2.
The significance of the difference in the Ace index (A) and Chao1 (B) index between each group. The significant differences were evaluated by t test (*P < 0.05, the asterisk indicates statistical significance).
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.