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I used Trans1-T1 phage resistant chemically competent cells to extracted lentiviral gRNA expression vectors. And there were bands near 2000bp and smear on 1% argrose gel. Did the smear come from...
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I used MN NucleoBond Xtra Midi to extract plasmids, but the agarose gel electrophoresis showed the plasmids contained not only one component. There are bands around 250bp, what are those bands?
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