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[Experimental echinococcosis in piglets infected by the inoculation of the embryonic elements of the cysts from human patients].

Twenty six piglets aged 25 days divided into 4 groups (Groups 1 and 4 included 5 piglets and Groups 2 and 3 comprised 8 ones) were selected. The piglets from Groups 1, 2, and 3 were peritoneally inoculated with 5000 protoscolices and acephalocysts from the cyst of human Echinococcus granulosus by the procedure [4]. Group 4 piglets were not inoculated they served as a control group. Prior to infection, the animals were weighed and their blood was analyzed by the conventional procedure. On day 90 following inoculation, the piglets were killed. All the infected piglets developed Echinococci which grew rapidly, some larvocysts measured as high as 34 mm in diameter and contained alive protoscolices. The Echinococcus-infected animals were found to have changes in blood composition, impaired protein-amino acid metabolism, lower living mass as compared to the controls. The inoculation of embryonic elements of echinococcosis from ill humans to pigs is a model of this disease, which is promising for medical studies.