1-1-1. Drawbacks of Conventional cDNA Library

The full-length cDNA, which contains the entire sequence of the mRNA, is the ultimate goal for the cDNA cloning. Unfortunately, cDNA libraries constructed by many types of conventional methods have high content of non-full length cDNA clones. One of the reasons for this high content is that reverse transcriptase tends to stop during the first strand synthesis and falls off, leaving non-full length cDNA. Thus, non-full length cDNA is an inevitable result of the use of reverse transcriptase for the cDNA synthesis.
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