FIELD: veterinary medicine; veterinary virusology. SUBSTANCE: duck virus hepatitis strain VGNKI-K-DEP is cultured in 11-12 days old duck embryo tissue explant suspension on roller or spinner apparatus during 72 h. Before its being packed, the obtained virus-containing material is mixed with a sorbital gelatinous stabilizer in 1:3 proportion and exposed to lyophilization. EFFECT: higher production output, improved quality of the vaccine, preserved immunologic activity within 12 months. 7 tbl
Authors
Dates
1995-05-27—Published
1991-10-23—Filed