Features of the Morphological Structure of Liver and Lung Larvocysts in Experimental Animals

Abstract

Knowing the minimum required dose of embryos to obtain an experimental model of echinococcosis, we did not expect the development of echinococcosis in animals when they are fed less than 50 eggs of the parasite. With the obvious dependence of the total number of developing relatively large and microscopic cysts on the number of embryos introduced into the stomach, we still have to state that a 200-fold decrease in the concentration of the causative agent of the disease (from 1000 individuals in sheep to 5 in lambs) leads only to sixfold reduction of macroscopically detected cysts.