Get another option for robust, coordinated dual gene expression with the pCDH-EF1α-MCS-(PGK-Puro) Bidirectional Promoter Lentivector. Well-regarded in the industry for reliable gene expression, SBI’s lentiviral vectors come in a variety of formats that support a wide range of applications. The pCDH-EF1α-MCS-(PGK-Puro) Bidirectional Promoter Cloning and Expression Lentivector gives you another option for robust, coordinated expression of your gene-of-interest and a puromycin resistance marker.