... Procedure Design your plasmid and order primers (see figure to the right). When designing your plasmid...and enrich for correctly assembled plasmids by designing primers to split an antibiotic resistance gene...and yield. If there are significant amounts of undesired product, gel-purify DNA segments. Otherwise, PCR... High-Fidelity DNA Polymerase - incorporates nucleotides to “fill in” the gaps in the annealed DNA fragments... (<150 bp). Pro-Tip Please note that the way to design the “stitching” primers and the amounts of primers...window) . NEB has other resources, such as a primer design tool (Link opens in a new window) . Gibson Assembly...