生物素结合位点的复杂性和结构的不规则性使得它最适合与生物素结合并且表现出与链霉素亲和素-生物素复合体的高度特异性(4)。
The complex and irregular structure of the biotin-binding site makes it highly optimized for biotin binding and confers great specificity to the streptavidin-biotin complexes (4).
方法：直接包被法、SPA法、生物素-亲和素法。
目的探讨TM5．28单克隆抗体-生物素-亲和素系统检测日本血吸虫循环抗原及其诊断效果。
Objective To explore the diagnostic efficiency of circulating antigen using the TM5. 28 mAB-biotin-avidin system for the detection of schistosomiasis japonica.
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