Bakiev A. G. RussiaTogliattiInstitute of Ecology of the Volga River Basin, Russian Academy of Sciences, 10 Komzin Str., Togliatti 445003, Russiaherpetology@list.ru Author's articles LEUKOCYTE BLOOD COMPOSITION FEATURES OF GRASS SNAKE (NATRIX NATRIX) AND DICE SNAKE (N. TESSELLATA) (REPTILIA: COLUBRIDAE) FEMALES IN THE SAMARA REGION