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RT-PCR Amplification failures

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#1 Kanai Emmanuel Thomas

Kanai Emmanuel Thomas


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Posted 17 April 2015 - 06:50 AM

I have successfully extracted RNA from an animal tissue and carried out gel electrophoresis to determine the integrity of the RNA which came out very fine with the distinct bands of the 28S and18S having the expected ratio. I equally used the Nanodrop 2000 spectrophotometer to quantify the RNA and I got an A260/A280 ratio of 1.98 which is equally deemed good. I reverse transcribed to produce my cDNA. When I carried out the RT-PCR amplification using different primers with appropriate PCR conditions, not even primer dimers were obtained for good six weeks. Meanwhile, the PCR process was tested with a positive control and it worked. The problem seems to be from the cDNA synthesis. Can some please give an idea what is likely wrong and how can I test if the RT worked well?

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