Results (
Vietnamese) 1:
[Copy]Copied!
Following precipitation, the DNA can be pipetted off by slowly rotating/spinning atip in the cold solution. The precipitated DNA sticks to the pipette and is visible as aclear thick precipitate. To wash the DNA, transfer the precipitate into a microfugetube containing 500 μl of ice cold 70 % ethanol and slowly invert the tube. Repeat.((alternatively the precipitate can be isolated by spinning the tube at 13000 rpm for aminute to form a pellet. Remove the supernatant and wash the DNA pellet by addingtwo changes of ice cold 70 % ethanol )).- After the wash, spin the DNA into a pellet by centrifuging at 13000 rpm for 1 min.Remove all the supernatant and allow the DNA pellet to dry (approximately 15 min).Do not allow the DNA to over dry or it will be hard to re-dissolve.- Resuspend the DNA in sterile DNase free water (approximately 50-400 μl H2O; theamount of water needed to dissolve the DNA can vary, depending on how much isisolated). RNaseA (10 μg/ml) can be added to the water prior to dissolving the DNAto remove any RNA in the preparation (10 μl RNaseA in 10ml H2O).- After resuspension, the DNA is incubated at 65o C for 20 min to destroy any DNasesthat may be present and store at 4o C.- Agarose gel electrophoresis of the DNA will show the integrity of the DNA, whilespectrophotometry will give an indication of the concentration and cleanliness.
Being translated, please wait..
