title: [Advances in identification of semen stains].
abstract: Stain identification has long been a task in forensic biology. The identification of semen stain, one of the most common human stains, can provide crucial information for crime scene reconstruction and forensic investigation. Traditional detection of semen stain depends largely on the microscopic identification of spermatozoa, enzyme activity-based methods or antigen-antibody reactions. These morphological, proteinological and zymological approaches, however, are apparently inadequate in identifying tiny, admixed, degraded or contaminated samples. With the development of transcriptomics and epigenetics, many semen-specific mRNA markers, such as protamine-1 (PRM1) and -2 (PRM2), have been applied to semen and semen stain identification. Messenger RNA profiling shows great promise in identifying tissues as demonstrated by the recognition of specific markers. Further more, studies on tis-sue-specific differential DNA methylation will provide a scrumptious way of identifying difficult samples.
authors.affiliation: School of Forensic Medicine, Henan University of Science and Technology, Luoyang, Henan 471003, China.
authors.forename: Guang-Yao
authors.initials: GY
authors.lastname: Fan
authors.forename: Gui-Sen
authors.initials: GS
authors.lastname: Zhao
authors.forename: Yao-Nan
authors.initials: YN
authors.lastname: Mo
mesh_terms: D019175:DNA Methylation; D005554:Forensic Medicine / Q000379:methods*; D005819:Genetic Markers; D006801:Humans; D008297:Male; D012333:RNA, Messenger / Q000032:analysis; D012661:Semen
chemical_list: D005819:Genetic Markers; D012333:RNA, Messenger