3. Possess a complex antigenic structure Immulogic test for“sero” classification Flagella(H antigen Capsule(K or Vi antigen Lipopolysaccharide( LPS)or n O polysaccharid Polysaccharide lipid a U7P点CF就E ooplasmIc sp proprotein UPOPEOTEH Peptidogly PEPTDOCUCAH Inner membrane Cytopl3. Possess a complex antigenic structure Immulogic test for “sero” classification