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The completion of the Human Genome Project in 2003 ushered in a new era of rapid, affordable, and accurate genome analysis—called Next Generation Sequencing (NGS). NGS builds upon “first generation sequencing” technologies to yield accurate and cost-effective sequencing results. Fred Sanger sequenced the first whole DNA genome, the virus phage ?X174, in 1977. In that…
What do these three seemingly disparate studies have in common? After publication, the high-profile findings in each one were questioned due to the presence of batch effects. Batch effects are ever-present and insidious in science, so as researchers we need to always be on guard against them. Keep reading for a run-down of how they…
The wide range of applications of PCR has led to an ever-growing list of variants of the technique. While some are optimizations to suit specific requirements and are very similar to basic PCR, others completely turn the technique on its head to formulate novel creative applications in various fields. This article lists some variants of…
There is a right way and a wrong way to set up a PCR laboratory. Because of PCR’s tremendous ability to amplify small quantities of DNA/RNA template, even the smallest of template contamination can become a huge problem in PCR. However, contamination does not have to be a problem in your laboratory. Read below to…
We are pleased to announce that the famous maid of microbiology, dear old Aunt Yersinia, has agreed to start writing a microbiology and molecular biology advice column for Bitesize Bio. She will be free to answer your most pressing questions sent to: auntyersinia@bitesizebio.com By way of introduction, Aunt Yersinia is bestowing 8 spores of knowledge garnered…
A wide variety of enzymes are available for PCR and RT-PCR and the optimal choice depends on a range of factors specific to your experiment. Some of these factors will now be explored to help you to make the most suitable and cost effective choices when ordering. PCR Type and Other Factors to Consider First,…
So you’re designing a new experiment that requires PCR quantification. You used to have only one method to choose from, but now you have two – Quantitative Real-Time PCR (qPCR) and Digital PCR (dPCR). Which one is right for your application? Both methods have good quantification, sensitivity and specificity for most applications. They are compatible…
One of my colleagues, a very good molecular biologist, told me that the only time she uses chemistry is when she needs to calculate molarities. I, of course, scoffed at this statement, and tried to remind her of all the chemistry she uses daily. True, I may be a bit biased since I am a…
A while back, I wrote an article on 5 DNA ligation tips that could improve the efficiency of your cloning procedures. It proved to be quite a popular article so here are another 3 tips that might make your ligations even better! 1. Change ligase brand. All T4 DNA ligase preps are not equal. Many…
In any experimental procedure, getting the controls right can save you a lot of work when things go wrong by allowing you to troubleshoot the source of the problem. DNA ligation is no different. In this article, we explain how to set up a ligation reaction with a complete set of controls, and use them…
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