Abstract:Among numerous applications, the polymerase chain reaction (PCR) (1,2) provides a convenient means to clone 5' ends of rare mRNAs and to generate cDNA libraries from tissue available in amounts too low to be processed by conventional methods. Basically, the amplification of cDNAs by the PCR requires the availability of the sequences of two stretches of the molecule to be amplified. A sequence can easily be imposed at the 5' end of the first-strand cDNAs (corresponding to the 3' end of the mRNAs) by priming the… Show more
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