P.O. Vardevanyan - Dr.Sc.(Biol.), Professor, Department of Biophysics, Faculty of Biology, Yerevan State University. E-mail: biophys_dep@mail.ru A.V. Nerkararyan - Ph.D.(Biol.), Associate Professor, Department of Biophysics, Faculty of Biology, Yerevan State University. E-mail: a.nerkararyan@ysu.am M.S. Mikaelyan - Department of Biophysics, Faculty of Biology, Yerevan State University. E-mail: m.mikaelyan@ysu.am M.A. Shahinyan - Ph.D.(Biol.), Junior Research Scientist, Department of Biophysics, Faculty of Biology, Yerevan State University. E-mail: mariamsh@rambler.ru