Antibody to an artificial disaccharide antigen cross-reactive with Neisseria gonorrhoeae lipopolysaccharide

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Abstract
An artificial antigen was prepared from 4-O-beta-I-galactopyranosyl-D-glucose (lactose) and 8-ethoxycarbonyloctanol. Covalent attachment to bovine serum albumin provided an antigen that elicited antilactose antibody in rabbits and goat. These antibodies were active against Neisseria gonorrhoeae lipopolysaccharide in passive hemagglutination tests. The same antibody agglutinated cells of Streptococcus faecalis, strain N, and precipitated the lactose-containing cell wall diheteroglycan of this organism. Fractionation of rabbit and goat antibody raised against the synthetic antigen of S. faecalis vaccine provided two antibody fractions only one of which, eluted from the immunoadsorbent by galactose, was active against N. gonorrhoeae lipopolysaccharide.

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