What bacteria strain do you use to grow DNA? September 13, 2019 07:46 Updated Our default strain is TOP10 cells. Related articles How much could it cost to the plasmid preparation? What information should I provide for the plasmid preparation? Do you ship the plasmid prep in lyophilized or in liquid form? If liquid, what buffer is used and what is the concentration? What QC is done after plasmid prep? Which protocol do you use for mutagenesis, is it quick change?