Author:
Okuda K,Ito K,Miyake K,Morita M,Ogonuki M
Abstract
A large-scale procedure for purification and concentration of Japanese encephalitis virus vaccine by a continuous-flow isopycnic banding technique in a sucrose density gradient solution, using a K-III zonal centrifuge rotor, is presented. The quality of zonal-purified vaccine was compared with commercial and Japanese National Institutes of Health reference vaccines for antigenicity, immunodiffusion, and allergic encephalitogenicity tests to show its high purity.
Publisher
American Society for Microbiology
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