title: Ultrastructural study of an unusual crystalloid in the Sertoli cells of the bull.
abstract: An unusual type of crystalloid was found in the cytoplasm of bull Sertoli cells. Located in the immediate vicinity of the nucleus, this crystalloid is a non-membrane bound ovoid-shaped structure with maximum dimensions of 10 microns in length and 3 microns in width. It consists of closely packed parallel arrays of zigzag coursing 13 nm filaments and is closely associated with a number of cell organelles like mitochondria, smooth endoplasmic reticulum, lysosomes and the juxtanuclear network of vimentin filaments. This specific aspect is discussed in relation to a possible role in the transport of steroidogenic metabolites and/or other secretory products.
authors.affiliation: Institute of Histology and Embryology, University of Vienna, Austria.
authors.forename: R
authors.initials: R
authors.lastname: Czaker
mesh_terms: D000818:Animals; D002417:Cattle / Q000033:anatomy & histology*; D003460:Crystallization; D003593:Cytoplasm / Q000648:ultrastructure; D008297:Male; D012708:Sertoli Cells / Q000648:ultrastructure*