{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,15]],"date-time":"2026-08-15T08:11:26Z","timestamp":1786781486333,"version":"build-2736575974"},"reference-count":30,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2022,3,30]],"date-time":"2022-03-30T00:00:00Z","timestamp":1648598400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100005289","name":"National Institute of Justice","doi-asserted-by":"publisher","award":["2020\u2010R2\u2010CX\u20100031"],"award-info":[{"award-number":["2020\u2010R2\u2010CX\u20100031"]}],"id":[{"id":"10.13039\/100005289","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Forensic Sciences"],"published-print":{"date-parts":[[2022,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Molecular methods for body fluid identification have been extensively researched in the forensic community over the last decade, mostly focusing on RNA\u2010based methods. Microbial DNA analysis has long been used for forensic applications, such as postmortem interval estimations, but only recently has it been applied to body fluid identification. High\u2010throughput sequencing of the 16S ribosomal RNA gene by previous research groups revealed that microbial signatures and abundances vary across human body fluids at the genus and\/or species taxonomic level. Since quantitative PCR is still the current technique used in forensic DNA analysis, the purpose of this study was to design a qPCR multiplex targeting the 16S gene of <jats:italic>Bacteroides uniformis<\/jats:italic>, <jats:italic>Streptococcus salivarius<\/jats:italic>, and <jats:italic>Lactobacillus crispatus<\/jats:italic> that can distinguish between feces, saliva, and vaginal\/menstrual secretions, respectively. Primers and probes were designed at the species level because these bacteria are highly abundant within their respective fluid. The validated 16S triplex was evaluated in DNA extracts from thirty donors of each body fluid. A classification regression tree model resulted in 96.5% classification accuracy of the population data, which demonstrates the ability of this 16S triplex to presumptively identify these fluids with high confidence at the quantification step of the forensic workflow using minimal input volume of DNA extracted from evidentiary samples.<\/jats:p>","DOI":"10.1111\/1556-4029.15029","type":"journal-article","created":{"date-parts":[[2022,3,30]],"date-time":"2022-03-30T07:15:54Z","timestamp":1648624554000},"page":"1660-1667","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Design and optimization of a <scp>16S<\/scp> microbial <scp>qPCR<\/scp> multiplex for the presumptive identification of feces, saliva, vaginal and menstrual 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