Orc4 Mouse Gene Knockout Kit (CRISPR) KN512627 USD 1,290.00 2 Weeks Orc4 - KN2.0, Mouse gene knockout kit via CRISPR, non-homology mediated. Format 2 gRNA vectors, 1 linear donor Donor DNA EF1a-GFP-P2A-Puro KN512627 is the updated version of KN312627.