V4 16S bronciectasis infections in ORBIT3 samples
DNA was extracted from sputum samples of bronchiectasis patients, most of which were infected with Pseudomonas aeruginosa under ORBIT3 trial of inhaled ciprofloxacin. The V4 region of 16S was amplifified and sequenced on an Illumina platform to estimate community composition. The primers used are given below:  Forward primer: 5' ACACTCTTTCCCTACACGACGCTCTTCCGATCT - NNNNNGTGCCAGCMGCCGCGGTAA Reverse primer: 5' GTGACTGGAGTTCAGACGTGTGCTCTTCCGATCT - GGACTACHVGGGTWTCTAAT Annealing site for 2nd round PCR is before the hyphen