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Relative transcript quantification by Quantitative PCR: Roughly right or precisely wrong?

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Author(s): Skern Rasmus | Frost Petter | Nilsen Frank

Journal: BMC Molecular Biology
ISSN 1471-2199

Volume: 6;
Issue: 1;
Start page: 10;
Date: 2005;
Original page

ABSTRACT
Abstract Background When estimating relative transcript abundances by quantitative real-time PCR (Q-PCR) we found that the results can vary dramatically depending on the method chosen for data analysis. Results Analyses of Q-PCR results from a salmon louse starvation experiment show that, even with apparently good raw data, different analytical approaches 12 may lead to opposing biological conclusions. Conclusion The results emphasise the importance of being cautious when analysing Q-PCR data and indicate that uncritical routine application of an analytical method will eventually result in incorrect conclusions. We do not know the extent of, or have a universal solution to this problem. However, we strongly recommend caution when analysing Q-PCR results e.g. by using two or more analytical approaches to validate conclusions. In our view a common effort should be made to standardise methods for analysis and validation of Q-PCR results.
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