[Application of the modified mixed cell agglutination reaction (MCAR according to Davidsohn) in forensic serology; MCAR on adhesive tape (author's transl)].

In view of serological sensitivity, specificity and simple procedure of reaction pattern the modified mixed cell agglutination reaction (Davidsohn's MCAR) proved to be a very useful test for typing ABO isoantigens in forensic medicine. Its sensitivity surpasses in some cases, where very small amounts of isoantigens have to be detected, that of the absorption-elution reaction several thousand times. The capacity to demonstrate the localization of antigens seems to be more reliable than the original test method. The modified Davidsohn's MCAR (MCAR on adhesive tape) is expecially recommended when isoantigens which are localized on the surface of microscopic objects including fingerprints, dust, hairs, and histological sections, have to be determined. The usefulness of our modification in forensic medicine and the conditions which are essential for the application, are discussed.