title: Freeze-fracture electron microscopy of the nuclear envelope of the human odontoblast.
abstract: The nuclear envelope was studied in several planes on freeze-fracture replicas. The inner and outer nuclear membranes were similar. Each presented two fracture faces, one with a higher intra-membranous particle density than the other. The perinuclear cisterna was bounded by outer and inner nuclear membranes about 40 nm apart. The nuclear pores of 85 nm diameter were evenly distributed over the nuclei. The pore density (5/micron2) was low compared with that in many other cells, but was of the same magnitude as is reported for the rat odontoblast.
mesh_terms: D000293:Adolescent; D000328:Adult; D001641:Bicuspid / Q000648:ultrastructure; D005614:Freeze Fracturing; D006801:Humans; D008854:Microscopy, Electron; D008963:Molar / Q000648:ultrastructure; D009685:Nuclear Envelope / Q000648:ultrastructure; D009804:Odontoblasts / Q000648:ultrastructure*