Table 1.

PCR primers.

Primer	Sequence	Reference
magA forward	5′-GAGAGGATCCGGTGCTCTTTACATCATTGC-3′	21
magA reverse	5′-GAGAGGATCCGCAATGGCCATTTGCGTTAG-3′	21
rmpA forward	5′-ACTGGGCTACCTCTGCTTCA-3′	26
rmpA reverse	5′-GCGGTAATACGGAGGGTGC-3′	26
16s rRNA forward	5′-GCGGTAATACGGAGGGTGC-3′	22
16s rRNA reverse	5′-CACATCCGACTTGACAGACC-3′	22