Ultrastructure of Sarcocystis spp. from donkeys (Equus asinus) in Egypt. 1987

M Hilali, and A M Nassar

The fine structure of Sarcocystis spp. from donkeys (Equus asinus) in Egypt is described. Sarcocysts were found in the oesophagus, diaphragm and heart of 18 of 20 donkeys. Only one type of mature muscle cyst was found. Sarcocysts were 120-410.6 X 48.4-50.2 microns. The primary cyst wall had numerous 3.3-3.7 microns villi. Each villus contained 20-60 fibrillar elements which extended from the ends and sides of the villi throughout the ground substance, where they became tightly packed. The bundles of fibrillar elements formed junctions with the pellicles of the metrocytes. Ultrastructurally, Sarcocystis spp. of the donkey was similar to sarcocysts previously described from the horse.

UI MeSH Term Description Entries
D008854 Microscopy, Electron Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen. Electron Microscopy
D010527 Perissodactyla An order of ungulates having an odd number of toes, including the horse, tapir, and rhinoceros. (Dorland, 27th ed) Perissodactylas
D004534 Egypt A country in northern Africa, bordering the Mediterranean Sea, between Libya and the Gaza Strip, and the Red Sea north of Sudan, and includes the Asian Sinai Peninsula Its capital is Cairo. Arab Republic of Egypt,United Arab Republic
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012522 Sarcocystis A genus of protozoa found in reptiles, birds, and mammals, including humans. This heteroxenous parasite produces muscle cysts in intermediate hosts such as domestic herbivores (cattle, sheep, pigs) and rodents. Final hosts are predators such as dogs, cats, and man. Sarcosporidia,Sarcocysti,Sarcosporidias
D012523 Sarcocystosis Infection of the striated muscle of mammals by parasites of the genus SARCOCYSTIS. Disease symptoms such as vomiting, diarrhea, muscle weakness, and paralysis are produced by sarcocystin, a toxin produced by the organism. Sarcosporidiosis,Sarcocystoses,Sarcosporidioses

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