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Cytochemical detection of ABH antigens in human body fluids

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Summary

The use of the peroxidase-anti-peroxidase (PAP) technique has been described previously for the detection of cellular antigens and in particular ABO antigens from tissue samples (Pedal and Hülle 1984; Pedal and Baedeker 1985; Pedal et al. 1985). In this survey, the PAP method has been employed to study the detection of ABO antigens in cells from body fluids of particular interest to forensic science, namely buccal cells and vaginal cells. Also tested, but in a limited number, were mixtures of body fluids and semen samples. No false reactions were obtained from buccal cells, all samples corresponding to the ABO blood type of the donor. Preliminary results from vaginal cells, vaginal/buccal cell mixtures, and semen were encouraging but must be treated with caution due to the limited number tested. Vaginal smears contaminated with semen showed varying degrees of nonspecificity.

Zusammenfassung

Die Anwendung der indirekten Immunoperoxidase-technik (PAP) ist zuvor im Zusammenhang mit der Bestimmung zellulärer Antigene, insbesondere ABO-Antigene aus Gewebeproben, beschrieben worden (Pedal und Hülle 1984; Pedal und Baedeker 1985; Pedal et al. 1985). In der vorliegenden Untersuchung wurde die PAP-Technik angewendet zur Bestimmung von ABO-Antigenen an Zellen und in Körperflüssigkeiten. Untersucht wurden Mundschleimhautzellen, Vaginalzellen, letztere von speziellem Interesse für die forensische Praxis, und in begrenzter Anzahl Mischungen aus Körperflüssigkeiten und Spermaproben. Es fanden sich keine falsch positiven Ergebnisse bei der Untersuchung von Mundschleimhautzellen; die Resultate korrespondierten mit den ABO-Merkmalen aus dem Blut der Spender. Vorläufige Untersuchungen von Vaginalzellen, von Mischungen aus Vaginal- und Mundschleimhautzellen und von Spermaproben verliefen erfolgversprechend, müssen aber aufgrund der nur begrenzten Anzahl der Untersuchungen vorsichtig interpretiert werden. Vaginalabstriche, kontaminiert mit Sperma, zeigten unterschiedlich starke, unspezifische Reaktionen.

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Brinkmann, B., Kernbach, G. & Rand, S. Cytochemical detection of ABH antigens in human body fluids. Z Rechtsmed 96, 111–117 (1986). https://doi.org/10.1007/BF00198627

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