The symptoms of the disease are silent and often appear many years after infection. 该病的症状是隐性的,通常在感染多年以后才显现出来。
We tried to detect low, even single target sequence for identification of silent or mixed infection by in situ PCR which the sensitivity is very high. It is practicable to apply in situ PCR on clinical diagnosis and molecular epidemiological investigation of IBDV. 本试验尝试利用具有极高灵敏度的原位PCR方法,从组织中检测低拷贝甚至单拷贝的目标序列,以鉴别隐性感染或混合感染,为IBDV的诊断和分子流行病学的分析提供了一种新的手段。
Good packaging products, can be the case in the absence of writing, through the visual language to communicate silently, it can cross geographical restrictions, breaking through language barriers, integration of cultural differences, so as to achieve the artistic effect of a silent infection. 好的包装产品,可以在没有文字的情况下,通过视觉语言进行无声地沟通交流,它能跨越地域限制、突破语言障碍、融合文化差异,从而达到无声感染的艺术效果。