5ug质粒
The pSilencer 4.1-CMV siRNA Expression vectors are linearized with both BamH 1 and Hind III to facilitate directional cloning. They are also purified to remove the digested insert so that it cannot re-ligate with the vector. This greatly increases the percentage of clones bearing the hairpin siRNA template insert after ligation, reducing the time and effort required to screen clones.