A light and electron microscopic study of sarcocysts in a horse.

TitleA light and electron microscopic study of sarcocysts in a horse.
Publication TypeJournal Article
Year of Publication1980
AuthorsTinling SP, Cardinet GH, Blythe LL, Cohen M, Vonderfecht SL
JournalThe Journal of parasitology
Volume66
Issue3
Pagination458-65
Date Published1980 Jun
ISSN0022-3395
KeywordsAnimals, Cell Nucleus, Cytoplasm, Female, Horses, Microscopy, Electron, Microtubules, Muscles, Organoids, Sarcocystis, Vacuoles
Abstract

The structure of sarcocysts in a horse is presented. Light microscopic examination revealed that the maximum cyst dimensions were 136 X 990 micrometers and the cyst walls were striated and 1 to 3 micrometers thick. Electron microscopic examination revealed that the "cyst wall" was formed by villuslike protrusions of the parasitophorous vacuole's primary wall. A unique feature was the presence and arrangement of microtubules within the parasitophorous vacuole. Thirty-four to 55 microtubules extended from the apical tips and sides of each villus and passed through the ground matrix to form junctions with the outer pellicle membrane of bradyzoites and metrocytes located at the margins of the cyst. The average dimensions of the bradyzoites were 3.2 X 14.2 micrometers.

Alternate JournalJ. Parasitol.