Region	Primers
V3-V4 [17]	341F (5'-CCTACGGGNGGCWGCAG-3') 805R(5'-GACTACHVGGGTATCTAATCC-3')
Archae [18]	F(5'-GYGCASCAGKCGMGAAW-3') R(5'-GGACTACHVGGGTWTCTAAT-3')
V4 [19]	515F(5'-GTGYCAGCMGCCGCGGTAA-3') 806R (5'- GGACTACHVGGGTWTCTAAT-3')
V4-V5	F(5'-GTGCCAGCMGCCGCGG-3') R(5'-CCGTCAATTCMTTTRAGTTT-3')