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  • Title: Effects of solvent displacement on sensitivity and specificity of monoclonal antibodies for ABO blood grouping of forensic specimens with an absorption-elution test.
    Author: Kobayashi T, Yokota M, Mitani T, Akane A.
    Journal: Leg Med (Tokyo); 1999 Apr; 1(2):68-75. PubMed ID: 12935497.
    Abstract:
    Using commercially-available monoclonal antibodies (Bioclone, Neo Kokusai, Monoclonal Wako, Gamma Clone and Seraclone), ABO blood grouping of forensic specimens such as bloodstains, salivary stains, seminal stains, nails, hair and cerebral dura mater was performed with an absorption-elution test. Salivary stains, seminal stains and nails were not typed correctly using the antibodies other than Bioclone reagents, while precise grouping of bloodstains was performed using most antibodies. When hair and dura mater were tested, all of the antibodies induced weak or non-specific haemagglutination, hence correct grouping was not achieved. When the antibody solvents were displaced with 5-20% bovine serum albumin in saline, human serum of the group AB donor, or serum of chicken, sheep or bovine, titers of the reagents increased 2-8 times. Hair and dura mater were able to be typed using Bioclone reagents after solvent displacement with human AB or sheep serum, whereas displacement with the other solvents enhanced non-specific reactions.
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