J.J. Kiseleva - Embryologist, Academician V.I. Kulakov Research Center of Obstetrics, Gynecology and Perinatology of Ministry of Health of Russian Federation (Moscow); Post-graduate Student, Department of Biology and General Genetics, Institute of Medicine, Peoples' Friendship University of Russia, Moscow Е-mail: 79164171311@yandex.ru M.M. Azova - Dr.Sc. (Biol.), Associate Professor, Head of the Department of Biology and General Genetics, Institute of Medicine, Peoples' Friendship University of Russia, Moscow E-mail: azova_mm@pfur.ru A.O. Kirillova - Embryologist, Academician V.I. Kulakov Research Center of Obstetrics, Gynecology and Perinatology of Ministry of Health of Russian Federation (Moscow) Е-mail: a_kozyreva@oparina4.ru E.M. Zheludova - Ph.D. (Biol.), Associate Professor, Department of Biology and General Genetics, Institute of Medicine, Peoples' Friendship University of Russia, Moscow E-mail: zheludova_em@pfur.ru