title: The axon initial segment of corticocollicular neurons in the rabbit visual cortex: an electron-microscope study with HRP.
abstract: The synaptic connections of the axon initial segment (IS) of retrogradely labeled corticocollicular neurons in the rabbit visual cortex were studied using the HRP-EM method. Identified IS showed relatively few synaptic boutons unevenly distributed along their surface. All these axo-axonic terminals contained pleomorphic vesicles and formed symmetrical synaptic junctions with the IS. The possible origin and chemical nature of these synaptic boutons are discussed.
authors.affiliation: Department of Morphology, University of Zaragoza, Spain.
authors.forename: C
authors.initials: C
authors.lastname: Matute
authors.forename: P
authors.initials: P
authors.lastname: Contamina
authors.forename: L
authors.initials: L
authors.lastname: Martínez Millán
mesh_terms: D000818:Animals; D001370:Axonal Transport; D001369:Axons / Q000648:ultrastructure*; D006735:Horseradish Peroxidase; D008854:Microscopy, Electron / Q000379:methods; D009474:Neurons / Q000648:ultrastructure*; D011817:Rabbits; D014793:Visual Cortex / Q000648:ultrastructure*
chemical_list: D006735:Horseradish Peroxidase