A previous study conducted in Golestan Province, adjacent to Mazandaran, using DNA regions cox1 and nad1 showed that all classified cyst isolates from humans and ruminants belonged to the G1–G3 complex(E. granulosussensustricto) (23).Another study, usingITS1-RFLP, indicated the presence of G1 genotype in isolates originating from human, cattle and sheep isolates in Tabriz, north westernIran (45). The gene discussed is MT-ND1; the disease is cyst.