This product is AGE1.CR serum-free cell culture medium, a specialized formulation chemically defined and engineered for high-density suspension culture of avian embryonic retinal cells (AGE1.CR) and efficient viral vector production. Its core formulation precisely matches the unique high tolerance and efficient protein expression capabilities of this cell line in poultry virus vaccine production (e.g., measles virus vectors, influenza vaccines). By optimizing the amino acid metabolism profile, lipid transport system, and low endotoxin composition required for avian cells, it significantly enhances viral titers and recombinant protein yields while maintaining cellular genetic stability.