A.A. Skalny - Post-graduate Student, Federal State Institution of Science «Institute of Toxicology of the Federal Medical-Biological Agency», St. Petersburg. E-mail: scalny@rambler.ru M.V. Melikhova - Leading Research Scientist, Federal State Institution of Science «Institute of Toxicology of the Federal Medical-Biological Agency», St. Petersburg. E-mail: melihovamarina@inbox.ru E.Yu. Bonitenko - Dr.Sc. (Med.), Director, Federal State Institution of Science «Institute of Toxicology of the Federal Medical-Biological Agency», St. Petersburg. E-mail: eu_bonitenko@toxicology.ru A.V. Skalny - Dr.Sc. (Med.), Professor, Leading Research Scientist, Federal State Institution of Science «Institute of Toxicology of the Federal Medical-Biological Agency», St. Petersburg; Director, Federal State Educational Government-financed Institution of Higher Professional Education «Orenburg State University», Orenburg. E-mail: skalny3@microelements.ru M.G. Skalnaya - Dr.Sc. (Med.), Professor, Federal State Educational Government-financed Institution of Higher Professional Education «Orenburg State University», Orenburg; Senior Research Scientist, State Scientific Institution «All-Russian Research Institute of Beef Cattle Breeding», Orenburg. E-mail: skalnaya@yandex.ru S.A. Miroshnikov - Dr.Sc. (Biol.), Professor, Director, Federal State Educational Government-financed Institution of Higher Professional Education «Orenburg State University», Orenburg; Director, State Scientific Institution «All-Russian Research Institute of Beef Cattle Breeding», Orenburg. E-mail: vniims.or@mail.ru