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New England Biolabs

Cell lysis 101: 8 methods to break down cell walls

In Part 1, I introduced the types of cell walls out there and what they are made of – now it’s time to learn how to get through them. 1.  Mechanical methods of cell disruption Mechanical cell disruption is really just that: forcing open the cell wall and spilling the contents. The advantage to mechanical…

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Cell lysis 101: 5 types of cell walls you need to understand

Did you ever encounter resistance from a mammalian cell line when trying to extract the contents? Probably not, because destroying cell membranes is easy. Cell walls however are a different story. They are rigid, protective layers that can be so strong that the organism gives up movement in favour of protection! Cell walls exist in…

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Crush Like an Elephant, Soak Like the Rain: Old-School DNA Gel Extraction

In my previous article on DNA gel extraction, I explained how most commercially available DNA gel extraction kits work. However, there was a time before our society was blessed with these convenient marvels of technology and scientists had to summon the gods of “Crush and Soak”. This method has been proven for millennia, as people…

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How to Calculate a DNA Primer Concentration

Calculations can be the bane of laboratory work. Fortunately, there are many easy methods to help you do the maths you need in the lab. Here, we tell you about the different ways to calculate primer concentration depending on the starting material. For all calculations, let’s assume we have 22 nmol of a DNA primer…

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