FIELD: medicine, virology. SUBSTANCE: virus of Venezuelan equine encephalomyelitis, strain Trinidad, GKV number 536, is multiplied in human embryo diploid lung cells L-68 at 37 C for 18-24 h. Virus is concentrated with polyethylene glycol 6000, treated by ultrasonic oscillation (3 times by 15 s). Virus-containing material is purified in sucrose gradient density, inactivated with 0.05% formaldehyde for 48 h and sorbed on aluminium hydroxide at the ratio 0.8-1.2/8-12 at pH 7,3 ± 0,1 Final protein concentration in vaccine is 100 ± 10 mcg/ml, activity is 3.3-3.9 lg PFU. EFFECT: improved method of vaccine preparing. 3 cl, 3 tbl
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Authors
Dates
1995-05-20—Published
1991-04-29—Filed