FIELD: biotechnology, immunology. SUBSTANCE: method involves culturing the pure culture of a producer - fungus Drechslera graminea, its culturing on liquid nutrient medium, filtration, dispensing and sterilization of filtrate. Invention can be used for preparing ecologically pure preparations - immunomodulating agents used for prophylaxis and complex therapy of cattle diseases. EFFECT: improved method of preparing. 3 tbl
Authors
Dates
1997-12-27—Published
1995-02-06—Filed