16S rDNA of saliva microbiome: patients with schizophrenia
Genomic DNA was extracted using the Gentra Puregene Blood Kit  according to the manufacturer??s instructions. 16S rRNA gene amplicon sequencing libraries of the V4 region were constructed using primers 515F and 806R, and pools of amplicons were sequenced on a HiSeq 2500 sequencing system using 2??250 base pair (bp) chemistry.