SRX255777 SRA058763 SRP022235 PRJNA194521 For 18 of the plaques metagenomic DNA were separately extracted and sequenced. The samples were at both Baseline and EG and from nine of the subjects. The paired-end sequencing libraries were prepared under the NEXTflexTM technology (BIO Scientific Corp., USA). Metagenomic DNA was first fragmented with liquid nitrogen. Sequencing adaptors that include the index sequences were then ligated on the size-selected fragments. Ten cycles of PCR were introduced to enrich the properly ligated fragments. The enriched products were then sequenced on HiSeq (Illumina, USA) with 2 x120bp read length. These reads were subjected to quality filtering, and then human reads identified and separately archived. SRS577934 PG.fq P&G gingivitis microbiota WGS METAGENOMIC unspecified 120 0 Application Read Forward 1 Illumina HiSeq 2000