title: lung microbiome from sputum for AERIS.pl1.G3.122.25626077424007.POSM10
design: DNA sequencing of 16S rRNA V4 region using the forward primer 515F (5’-GTGCCAGCMGCCGCGGTAA-3’) and the reverse primer 806R (5’-GGACTACHVGGGTWTCTAAT-3’).