Table 1.

Primers used in this study.

Gene	Primers	Sequence (5′-3′)	Size (bp) *	Reference
norA	NorA-Fw	5′-TTCACCAAGCCATCAAAAAG-3′	620	Couto et al. [26]
	NorA-Rv	5′-CTTGCCTTTCTCCAGCAATA-3′
16S	16S-Fw	5′-GTAGGTGGCAAGCGTTATGCC-3′	228	Lucero et al. [27]
	16S-Rv	5′-CGCACATCAGCGTCAG-3′

* Base pairs.