title: [Study of the oocyst of the coccidia Eimeria nieschulzi by freeze-fracturing].
abstract: Ultrastructure of Eimeria nieschulzi unsporulated oocyst is revealed by freeze etching. The two layers of the oocyst wall are observed; they are separated from the multilayered cytoplasmic pellicule by an intraoocystic fluid. Nuclear envelope with pores, endoplasmic reticulum and mitochondrias surrounded by amylopectin granules are easy to identify. This technique makes possible the study of sporulation in Eimeria, which cannot be done with the classical Electron Microscope methods.
mesh_terms: D000818:Animals; D002467:Cell Nucleus / Q000648:ultrastructure; D003593:Cytoplasm / Q000648:ultrastructure; D004539:Eimeria / Q000648:ultrastructure*; D004721:Endoplasmic Reticulum / Q000648:ultrastructure; D005260:Female; D005614:Freeze Fracturing; D008854:Microscopy, Electron; D008928:Mitochondria / Q000648:ultrastructure
vernacular_title: Etude de l'oocyste de la coccidie Eimeria nieschulzi par cryodécapage