The Vi capsular polysaccharide of Salmonella typhi was bound to diphtheria toxoid(DT) with adipic acid dihydrazide(ADH) as a linker,and EDAC used as a condensating agent.

• 伤寒V i多糖与白喉类毒素(DT)蛋白以己二酰肼(ADH)作连接臂,在碳二亚胺(EDAC)的作用下结合成V i-DT结合物,进行抗原性、免疫原性和动物安全性试验。