Table 1.

Summary of primers used in the current study.

Primer pairs	Primer sequence (5′−3′)	Hypervariable region of the 16S rRNA gene sequence targeted by primer pairs.	References
338F	5′-ACTCCTACGGGAGGCAGCAG-3′	V3-V4 region	Wu, X. et al.18
806R	5′-GGACTACHVGGGTWTCTAAT-3′
799F	AACMGGATTAGATACCCKG	V5-V6-V7 region	Beckers et al.32
1193R	ACGTCATCCCCACCTTCC