title: Demonstration of kinetochores and centrioles in spermatocytes of two species of cockroaches by silver staining.
abstract: Light microscopy following silver staining of spermatocytes of German and Madagascar hissing cockroaches demonstrated: (1) the localization of a kinetochore in each autosomal synaptonemal complex during pachytene, and (2) visualization of centrioles in different stages of meiotic prophase. The presence of a "hairpin-like" twist and the nucleolus organizer region in the X-chromosome was observed only in the German cockroach.
mesh_terms: D000818:Animals; D003058:Cockroaches; D005260:Female; D008297:Male; D012834:Silver; D013090:Spermatocytes / Q000502:physiology / Q000648:ultrastructure*; D013094:Spermatozoa / Q000648:ultrastructure*; D013194:Staining and Labeling; D014960:X Chromosome / Q000648:ultrastructure
chemical_list: D012834:Silver