26 December 2019 3 3K Report

After I did the mini prep, the concentration is about 300ng/ul and A260/280 is 2.13. However, no plasmid can be seen after I loaded 5ul to run a gel and there is a what I believe a RNA contamination showed below 75bps. I was wondering where does this RNA contamination comes from, i.e. from bacterial or from something else?

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