FS_1 (CRX1754377; CRA026438)
R1 (read 1 primer sequence) were added  to the molecules during GEM incubation. P5, P7, a sample index, and R2 (read 2 primer sequence) were added during library construction via End Repair, A-tailing, Adaptor Ligation, and PCR.The final libraries contained the P5 and P7 primers used in Illumina bridge amplification.