The pMAB expression plasmid is the technological foundation of our cell line development platform. First of all, pMAB is designed for stable CHO cell lines. Utilizing the strong promotor sequences and selective genes, our vectors promote constitutive high level expression of recombinant proteins. pMAB cell lines typically produce gram quantities of protein. The pMAB vectors have been successfully used to create GMP manufacturing cell lines. The pMAB system can be also used for transient expression and allows rapid production of first batches of protein for initial tests.