title: Heterogeneity of Lewis antibodies. A comparison of the reaction of human and animal reagents with synthetic oligosaccharides.
abstract: Human as well as animal anti-Lewis reagents were shown to have different binding patterns to synthetic structures chemically related to the Lewis epitopes. Two main types of cross-reactions were found: (1) Cross-reactions among type 1 Lewis epitopes (Lea, Leb and Lewis disaccharide). This type of cross-reaction among different type 1 structures was predominant in anti-Lea reagents (16 out of 18), although it was also present in some anti-Leb reagents (4 out of 14). (2) Cross-reactions of Lea and Leb with their type 2 isomers X and Y. The Leb-Y cross-reaction was more frequent (7 out of 14) than the Lea-X cross-reaction (2 out of 18). The serological property of some anti-Lewis reagents reacting with cord cells ('Lex') is also shown to be heterogeneous although probably related to common features of the type 1 Lea and Leb epitopes and independent of the type 2 X and Y epitopes.
mesh_terms: D000372:Agglutination Tests / Q000379:methods; D000818:Animals; D000918:Antibody Specificity; D015478:Antigens, Heterophile / Q000032:analysis*; D003429:Cross Reactions; D000939:Epitopes; D004912:Erythrocytes / Q000276:immunology; D005312:Fetal Blood / Q000166:cytology; D006801:Humans; D007106:Immune Sera / Q000276:immunology; D007202:Indicators and Reagents; D007983:Lewis Blood Group Antigens / Q000276:immunology*; D009439:Neuraminidase / Q000494:pharmacology; D009844:Oligosaccharides / Q000138:chemical synthesis / Q000276:immunology*
chemical_list: D015478:Antigens, Heterophile; D000939:Epitopes; D007106:Immune Sera; D007202:Indicators and Reagents; D007983:Lewis Blood Group Antigens; D009844:Oligosaccharides; D009439:Neuraminidase