TABLE 1.

Oligonucleotide primers used in this study

Primer name	Primer sequence	Position on E. coli rRNA gene sequence (bases)
16SF	5′ TTGGAGAGTTTGATCCTGGCTC 3′	4–25
16SR	5′ ACGTCATCCCCACCTTCCTC 3′	1174–1194
NF	5′ GGCGGCAKGCCTAAYACATGCAAGT 3′	42–66
NR	5′ GACGACAGCCATGCASCACCTGT 3′	1044–1067
P2F	5′ GCGRCTCTCTGGTCTGTA 3′	712–729
N6R	5′ GGTGCCTTCGGGAAC 3′	1013–1027