ClonExpress Ultra One Step Cloning Kit V2 is a new generation of recombinant cloning kits, compatible with 1 – 5 fragments homologous recombination. Highly optimized 2 × CE Mix further significantly improves the recombination efficiency of multiple fragments. This product has broader compatibility with the GC content of homology arms, which better guarantees the success rate of cloning in more difficult application scenarios.