[Preparation and study of the anthrax protective antigen. II. Development of test preparations for the assessment of the quality of anthrax chemical vaccines and of the antigens obtained at various stages of its preparation]. / Poluchenie i izuchenie sibireiazvennogo protektivnogo antigens. Soobshchenie II. Test-preparaty dlia otsenki kachestva sibireiazvennoi khimicheskoi vaktsiny i antigenov, poluchaemykh na stadiiakh ee prigotovleniia

A homogeneous anthrax protective antigen (from the ST-I strain) characterized by a high immunogenicity and stability was obtained. Hyperimmune, monospecific to this preparation antiserum was prepared. It is suggested that these preparations can be used for the assessment of the quality of the anthrax chemical vaccine and of the antigens obtained at various stages of its preparation.