1. Optimization and purification of seed toxin antigens
The preferred strain is the quail attenuated strain, which has lower virulence and effectively prevents skin and mucosal types of chicken pox. By using continuous centrifugal separation and ultrafiltration technology, impurities in the production process are removed, resulting in purer antigens.
2. Unique cultivation process
Adopting a new cultivation process to ensure that the antigen content of each feather exceeds the standard by 2 times.
3. Selected SPF eggs are pure and safe
Using SPF eggs without 24 pathogenic microorganisms, the vaccine product is pure and safe.