PROCEDE DE CONCENTRATION ET DE PURIFICATION DE SOLUTIONS DU VIRUS DE LAMALADIE DE NEWCASTLE

摘要

1295814 Newcastle disease vaccines BAYER AG 19 April 1971 [5 Feb 1970] 21148/71 Heading A5B [Also in Division C6] In a process for the enrichment and purification of Newcastle disease virus, a solution of the virus is mixed with aqueous polyethylene glycol, the resultant mixture centrifuged and the precipitate containing virus separated from the supernatant solution. The virus may be inactivated and used in vaccines.