Used for culturing BHK-21 (Baby Hamster Kidney) cells under low-serum conditions, enabling reduced reliance on fetal bovine serum while maintaining cell growth and viability. Commonly applied in biopharmaceutical production, especially for virus propagation and recombinant protein expression, where serum-free or low-serum environments are preferred to minimize contamination risks and simplify downstream purification. Suitable for scaling up in bioreactors for industrial vaccine manufacturing.