nity Purified Chicken anti-CHO Annexin A5 Antibody
Annexin A5 is a host cell protein (HCP) generated by CHO cells during production of biotherapeutics. This process-related impurity accumulates in the extracellular space as it is released from dead CHO cells and secreted from viable cells during cell culture. Annexin A5 is highly immunogenic and may cause dangerous adverse reactions if present in a therapeutic drug formulation.