Romanova Elena B. RussiaNizhny NovgorodLobachevsky State University of Nizhni Novgorod, 23 Gagarin Avenue, Nizhni Novgorod 603950, Russiaromanova@ibbm.unn.ru Author's articles Leukocyte blood composition of Naturix natrix (Serpentes: Colubridae) in the Mordovian State Nature Reserve (Russia) Comparative leukocyte blood profile of Emys orbicularis (Reptilia: Emydidae) from two populations