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Naturally‐Occurring Anti‐M and Anti‐N with Special Case: IgG Anti‐N in a NN Donor
Author(s) -
Perrault R.
Publication year - 1973
Publication title -
vox sanguinis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.68
H-Index - 83
eISSN - 1423-0410
pISSN - 0042-9007
DOI - 10.1111/j.1423-0410.1973.tb03865.x
Subject(s) - titer , agglutination (biology) , antibody , in vivo , immunology , antigen , medicine , rh blood group system , red cell , chemistry , microbiology and biotechnology , biology
. Routine red cell antibody screening using a low‐ionic strength‐Polybrene Auto‐Analyzer has revealed the frequent occurrence of anti‐M: 62 cases in M negative and 2 in M positive individuals. Anti‐N was encountered in 8 cases: 6 in MN individuals and 1 in a MM patient, and 1 was found in a NN healthy blood donor. The latter antibody was the strongest detected and proved to be an IgG cold‐reacting antibody, with no evidence of in vivo activity in a donor with an apparently normal N antigen. The Auto‐Analyzer titer of this anti‐N was 1:256. Saline agglutination with 2% cells was negative but with 10% cell suspension, a titer of 1:16 to 1:32 was obtained.