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  • Title: Reactivity of 62 Rh MAbs with weak and variant antigens.
    Author: Morelati F, Revelli N, Drago F, Mancuso P, Sirchia G.
    Journal: Transfus Clin Biol; 1996; 3(6):359-66. PubMed ID: 9018789.
    Abstract:
    We characterized serologically 5 anti-C (4 IgM and 1 IgG), 3 anti-c (2 IgM and 1 IgG), 4 anti-E (1 IgM and 3 IgG), 4 anti-e (3 IgM and 1 IgG) and 46 anti-D (16 IgM and 30 IgG) monoclonal antibodies, provided by the Rh Section of the Third International Workshop and Symposium on Monoclonal Antibodies against Human Red Blood Cells and Related Antigens (1996) for their ability to detect weak and variant antigens. The agglutination patterns were established using untreated and papain-treated red blood cells in a column agglutination technology system (BioVue, Ortho). Significant differences were found between the IgM and IgG antibodies. The papain treatment seemed to be important for IgM but not for IgG antibodies. Almost all of the IgM anti-D antibodies detected untreated DIV samples and almost all of the IgG anti-D antibodies detected untreated weak D samples. Both IgM and IgG anti-D antibodies showed the highest number of negative reactions with DVI and Rh 33 red blood cells. The CwCw sample was detected by only one of the 4 anti-C IgM MAbs using enzyme-treated red blood cells. All anti-c MAbs were able to detect treated Cx samples. Because of the small number of weakly expressed E and e samples, definitive conclusions cannot be drawn on the ability of these antibodies to detect these antigens.
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