title: 16s-seq:Human intestinal microorganisms
design: The V4 hypervariable region of the bacterial 16S rRNA gene was amplified using modified fusion primers 515F (5-GTGCCAGCMGCCGCGGTAA-3) and 806R (5-GGACTACHVGGGTWTCTAAT-3), containing a 6-bp error-correcting barcode.