方法：采用链酶亲和素-过氧化物酶标记免疫组织化学方法，在PC NA阳性标本中测定增殖指数(PI)。
Methods the PCNA index (PI) was detected by the immunohistochemistry method of streptavidin in the PCNA positive samples.
采用链霉亲和素包被磁纳米粒子，将生物素标记的特异性抗体偶联在磁纳米粒子上，制备出高特异性的磁纳米探针；
The magnetic nanoparticle probe was prepared by specifically connecting the streptavidin-conjugated magnetic nanoparticles and the antibody of analyte via the strong streptavidin-biotin interaction.
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