ACKNOWLEDGEMENT
We thank the various members of the Project Team at Merck KGaA and IAVI for their contributions. We thank Sowmya Rajendran, Lynn Webster, Surya Karunakaran and Ferenc Boldog at ATUM for Cell Line Development of the stable CHO cell line pools. We thank the members of the senior management team at Merck KGaA and IAVI for their support and guidance through the project. The authors have no conflict of interest to declare.