title: Ultrastructure of the flagellum in sperms of the scorpion Tityus bahiensis.
abstract: In spermatids of the scorpion Tityus bahiensis two centrioles appear coaxially aligned. The flagellum shows 9 peripheral doublets and a central rod (9 + 1 pattern). This central rod, of about 15 nm in diameter, is positively stained when a cytochemical method for histone staining is used. Longitudinal sections show that radial spokes are apparently in groups of three and showing a basic repeat of about 94 nm.
mesh_terms: D000818:Animals; D002467:Cell Nucleus / Q000648:ultrastructure; D002502:Centrioles / Q000648:ultrastructure; D008297:Male; D008854:Microscopy, Electron; D008928:Mitochondria / Q000648:ultrastructure; D012605:Scorpions / Q000648:ultrastructure*; D013082:Sperm Tail / Q000648:ultrastructure; D013087:Spermatids / Q000648:ultrastructure