[求救] 有關pcr的問題?
最近在做cloning,要把學姊之前clone出來的cDNA(3kb)放入expression vector,
進行蛋白質表現,但我發現cDNA量已不足,自己想amplify這段cDNA,我利用
這段cDNA當作template,而primer則是使用當初夾出這段cDNA的那對primer,
所有反應條件都參考之前學姊的條件,我試了很多次都不成功,結果都沒目標片段,
都是一些分子量約100~500bp的片段.這個問題已困擾很久,希望有心人士能夠給點指引.
感激不盡
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