S. A. Makavchik
St. Petersburg State University of Veterinary Medicine
Россия

Makavchik S.A. – D.V.N., Associate Professor of the Department of Microbiology, Virology and Immunology 

V. S. Avdeenko
St. Petersburg State University of Veterinary Medicine
Россия

Avdeenko V.S. – D.V.N., Professor of the Department of Genetic and Reproductive Biotechnologies 

V. S. Pavlova
St. Petersburg State University of Veterinary Medicine
Россия

Pavlova V.S. – student of the veterinary faculty