Solomaykin Evgeny I. RussiaНижний НовгородNizhny Novgorod Lobachevsky State University, 23 Gagarina Prosp., Nizhny Novgorod 603950, Russiae7v4gen5iy@yandex.ru Author's articles COMPARATIVE DATA ON THE LEUKOCYTIC BLOOD FORMULA OF VIPERA BERUS AND VIPERA RENARDI Leukocyte blood composition of Naturix natrix (Serpentes: Colubridae) in the Mordovian State Nature Reserve (Russia)