Competency
-You could get several colonies by transformation of linear plasmids when you use good competent cells.
E coli strain
-Sometimes,you would get better results by changing strain without clear reasons.
Gel purification of PCR fragments.
-Although not detectable, by-products of PCR could disturb in-fusion or ligation process.
PCR stringency and cycles
-To get less by-products. |
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