p53 (TP53) Human Gene Knockout Kit (CRISPR) KN400003 USD 1,290.00 2 Weeks TP53 - KN2.0, Human gene knockout kit via CRISPR, non-homology mediated. Format 2 gRNA vectors, 1 linear donor Donor DNA EF1a-GFP-P2A-Puro KN400003 is the updated version of KN200003.