Abstract
ABSTRACT The study investigated the effect of infra red ray on the growth and development of secondary hydatid cysts of Echinococcus granulosus in mice which based on changes in cysts numbers, weights, diameters and percentage of their reduction, the changes in liver and spleen weights and their organ index. The study showed significant reduction, (p≤0.05), in secondary hydatid cysts weights and diameters in cyst which developed from irradiated protoscoleces. Also, there was a reduction in liver weights and organ index, with increasing spleen weights and organ index. The study elucidated that the best effect of infra red ray on cysts numbers, diameters, percentage of their reduction, liver weights and organ index were at 3 minutes of irradiation. Whereas, the optimum result of cysts weights was obtained at 5 minutes of radiation.
