Abstract
Embryonated chicken eggs and primary chicken embryo fibroblasts (CEFs) have been used for decades as a means of manufacturing human and veterinary vaccines. However, these egg and CEF-based production systems are associated with many serious limitations in terms of their regulatory acceptability, production capacity, and supply chain risks. The development of a safer, cheaper, and more efficient cell substrate for vaccine production would represent a significant business advantage for vaccine manufacturers. Building on the exceptional properties of avian embryonic stem cells, Vivalis has created a new cell substrate, the Duck EB66® cell line. This article describes how this cell substrate was derived, the manufacture and qualification of a master cell bank, and the evaluation of the cell substrate for the manufacture of vaccines and human therapeutic proteins.
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