“…In the case of Mabs, which require the coordinated expression, folding and assembly of both heavy (HCs) and light chains (LCs), a variety of studies using clonally-derived mammalian cell lines or hybridomas all demonstrate that at higher rates of Mab production, there is no correlation between qMab and the corresponding cellular availability of HC or LC mRNA (Barnes et al, 2004;Flickinger et al, 1992;Kim et al, 1998;Leno et al, 1992). Although in some studies, qMab correlates more strongly with LC mRNA content than HC mRNA content Merten et al, 1994;Strutzenberger et al, 1999). Accordingly, the process of Mab folding and assembly in the endoplasmic reticulum (ER) (Fig.…”