Monoclonal antibodies to O4 antigen of Vibrio parahaemolyticus.

Four monoclonal antibodies were prepared against O4 antigen of Vibrio parahaemolyticus. All the antibodies were shown to be specific for O4 antigen by agglutination with heat-killed O-cells of the organism and precipitation with LPS preparations. The inhibition experiments of the precipitations with various sugars and oligosaccharides suggested that the combining sites of these hybridoma antibodies were directed to an antigenic determinant structure containing----3 and----6 linked D-glucose, D-galactose, and N-acetyl-D-galactosamine.