TABLE 1.

PCR primers used to amplify the 16S rDNA

Primer name	Sequence	Position (nt)
B8F	5′-AGAGTTTGATC(A/C)TGGCTCAG	8–27a
B1500D	5′-TACCTTGTTACGACTTCACCCCAG	1507–1484a
Sym4	5′-TCTGCTCTGGGATAACAGGC	108–127b
Sym5	5′-GAACTGAGACCGCCTTTTGC	1297–1278b
341F-GC	5′-CGCCCGCCGCGCGCGGCGGGCGG GGCGGGGGCACGGGGGGCCTACG GGAGGCAGCAG	326–342b
534R	5′-ATTACCGCGGCTGCTGG	519–503b

^aE. coli numbering. 

^bS. thermophilum numbering.