title: The hypothalamic magnocellular system in the domestic fowl. Study on semithin sections.
abstract: Neuronal characteristics and location of the neurosecretory, magnocellular, fuchsin-paraldehyde-positive (FA+) system of the fowl are described at the light-microscopic level on serial semithin sections. Three nuclei make up this system, the nucleus supraopticus, n. magnocellularis interstitialis and n. paraventricularis. These nuclei display magnocellular neurons, not showing a parvocellular component. The neurons of the three nuclei showed a scattered pattern of distribution and a dense surrounding neuropil. Groups formed by magnocellular neurons were found in the three nuclei and groups formed by one magnocellular and a parvocellular neurons were only found in the n. magnocellularis interstitialis and in the n. paraventricularis. The presence of neurons in apposition to blood vessels was frequent in the magnocellular FA+ system of the domestic fowl.
authors.affiliation: Departamento de Morfología Microscópica, Facultad de Biología y Medicina, Universidad de Oviedo, España.
authors.forename: J
authors.initials: J
authors.lastname: Tolivia
authors.forename: D
authors.initials: D
authors.lastname: Tolivia
authors.forename: M
authors.initials: M
authors.lastname: Alvarez-Uría
mesh_terms: D000818:Animals; D001369:Axons / Q000648:ultrastructure; D006652:Histological Techniques; D007031:Hypothalamus / Q000033:anatomy & histology / Q000166:cytology* / Q000648:ultrastructure; D007032:Hypothalamus, Anterior / Q000166:cytology / Q000648:ultrastructure; D007033:Hypothalamus, Middle / Q000166:cytology / Q000648:ultrastructure; D008297:Male; D009474:Neurons / Q000166:cytology / Q000648:ultrastructure; D010242:Paraldehyde; D011200:Poultry / Q000033:anatomy & histology*; D012394:Rosaniline Dyes
chemical_list: D012394:Rosaniline Dyes; D010242:Paraldehyde