O Antigens
Synonyms
Antigen, Bacterial O
Antigen, O
Antigens, O
Bacterial O Antigen
O Antigen
O Antigen, Bacterial
O Specific Polysaccharide
O Specific Polysaccharides
O-Antigens
O-Specific Polysaccharide
O-Specific Polysaccharides
Polysaccharide, O-Specific
Polysaccharides, O-Specific
The lipopolysaccharide-protein somatic antigens, usually from gram-negative bacteria, important in the serological classification of enteric bacilli. The O-specific chains determine the specificity of the O antigens of a given serotype. O antigens are the immunodominant part of the lipopolysaccharide molecule in the intact bacterial cell. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed)