title: The species identification of very old human blood-stains.
abstract: The efficiency of 5% ammonia as an extractant of proteins from human bloodstains has been compared with that of water. Ammonia was shown to be a better extractant of protein than water and this allows the species identification of human bloodstains up to four years' old using conventional electrophoretic techniques.
mesh_terms: D000641:Ammonia; D001801:Blood Stains; D004586:Electrophoresis; D006801:Humans; D013045:Species Specificity; D013997:Time Factors; D014867:Water
chemical_list: D014867:Water; D000641:Ammonia