B.Ya. Syropâtov - Dr.Sc. (Med.), Professor, Chair Department of Physiology of the Basics of Anatomy, Perm State Pharmaceutical Academy. E-mail: syropyatov@mail.ru N.V. Kolotova - Ph.D. (Chem.), Associate Professor, Department of Analytical Chemistry, Perm State Pharmaceutical Academy. E-mail: kolotova-nina@rambler.ru