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飞鱼过海

木虫 (小有名气)

[求助] PCR

请教大家一个问题喃:
拿的圆环病毒提核酸后一次作10倍梯度稀释(-1到-9),然后将不同稀释度的核酸跑PCR然后电泳,做了很多次,结果都很奇怪,从-1到-6时目的条带逐渐变暗,然后-7时显示为阴性,然后从-8到-9时,又有目的条带,并且还越来越亮,这到底是个什么情况啊?
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飞鱼过海

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