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Ultrastructure of Sarcocystis grueneri-like Sarcocysts from Cardiac Muscle of Red Deer (Cervus elaphus) in Korea  

Son, Hwa-Young (Research Institute of Veterinary Medicine.College of Veterinary Medicine, Chungnam National University)
Kim, Nam-Soo (Research Institute of Veterinary Medicine.College of Veterinary Medicine, Chungnam National University)
Ryu, Si-Yun (Research Institute of Veterinary Medicine.College of Veterinary Medicine, Chungnam National University)
Kim, Hyeon-Cheol (School of Veterinary Medicine, Kangwon National University)
Rhee, Ju-Hee (Gyeonggi Veterinary Service Center)
Cho, Jeong-Gon (College of Veterinary Medicine and Bio-Safety Research Institute, Chonbuk National University)
Park, Bae-Keun (Research Institute of Veterinary Medicine.College of Veterinary Medicine, Chungnam National University)
Publication Information
Journal of Veterinary Clinics / v.26, no.6, 2009 , pp. 595-599 More about this Journal
Abstract
Sarcocystis grueneri-like sarcocysts were found from the cardiac muscles of a rearing red deer (Cervus elaphus) carcass in Korea. In the light microscopical examination of sarcocysts, they were oval to spherical cysts and 90-170$\times$110-380 ${\mu}m$ in size. However, there was no inflammation and myofiber degeneration. In the transmission electron microscope, these cysts were located within the sarcoplasm of the host cell and filled with merozoites. The sarcocysts were enclosed by a very thin wall (0.45-0.6 ${\mu}m$ thick) that consists of protrusions and ground substance. The primary cyst wall formed numerous strip-like protrusions which were 0.2-0.3 ${\mu}m$ wide and up to 4.2 ${\mu}m$ long. The protrusions were running in parallel with the surface of the cyst. A characteristic of the cyst wall was absent of fibrils inside the protrusions. Merozoites in the compartment measured about $15\times4\;{\mu}m$. The merozoite consisted of four regions: micronemes and rhoptries, amylopectin granule, nucleus, and amylopectin granules. The number of rhoptry was counted in 7-13.
Keywords
Sarcocystis gruener; Ultrastructure; Cervus elaphus; Korea;
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