Custom medium G13 and custom feed medium F13 were used. stable expression of launched mAb genes during fed-batch culture. Subject terms:Cell biology, Protein folding, Chaperones, Endoplasmic reticulum, Biotechnology, Expression systems == Introduction == In the last decade, the development of monoclonal antibodies (mAbs), including immunoglobulin G (IgG), as common biopharmaceuticals has gained increasing attention as […]