Objective: According to the polymorphism of the O-antigen gene clusters,thirty-one strains of Yersinia pseudotuberculosis were serotyped by PCR genotyping.

• 目的:依据假结核耶尔森菌O-抗原基因簇多态性,应用PCR基因分型方法替代传统的血清分型方法,对本室保存的31株假结核耶尔森菌进行分型研究。