4、抗原构造复杂 鞭毛抗原(H) Flagella [H antigen] Capsule(K or Vi antigen) Lipopolysaccharide (LPS)or endotoxin Opolysaccharide Polysaccharide core 美膜抗原 ☐LipidA K Outer membrane Periplasmic space 菌体抗原 (0 Lipoprotein Peptidoglycan Inner membrane Cytoplasm Pili 4、抗原构造复杂 鞭毛抗原(H) 菌体抗原(O) 荚膜抗原 (K)