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Titolo:
MORPHOLOGY AND BIRTH DATES OF HORIZONTAL CELLS IN THE RETINA OF A MARSUPIAL
Autore:
HARMAN AM; FERGUSON J;
Indirizzi:
UNIV WESTERN AUSTRALIA,DEPT PSYCHOL NEDLANDS WA 6009 AUSTRALIA
Titolo Testata:
Journal of comparative neurology
fascicolo: 3, volume: 340, anno: 1994,
pagine: 392 - 404
SICI:
0021-9967(1994)340:3<392:MABDOH>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
CALCIUM-BINDING PROTEINS; OUTER PLEXIFORM LAYER; SETONIX-BRACHYURUS; RABBIT RETINA; DOMESTIC CAT; MAMMALIAN RETINA; AREA CENTRALIS; MONKEY RETINA; TOPOGRAPHY; NEURONS;
Keywords:
HORIZONTAL CELL; RETINA; NEUROGENESIS; MARSUPIAL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
50
Recensione:
Indirizzi per estratti:
Citazione:
A.M. Harman e J. Ferguson, "MORPHOLOGY AND BIRTH DATES OF HORIZONTAL CELLS IN THE RETINA OF A MARSUPIAL", Journal of comparative neurology, 340(3), 1994, pp. 392-404

Abstract

Most eutherian (placental) mammals have two horizontal cell types; however, one type only has been seen in rodents. In order to assess whether one type of horizontal cell or two is a basic mammalian feature, we have examined the morphology of horizontal cells in a marsupial, thequokka wallaby, by Golgi staining or horseradish peroxidase labelling. The birth dates of horizontal cells have also been determined by H-3-thymidine/autoradiography. There are two types of horizontal cell in the wallaby retina. One type has no axon and corresponds to the axonless cell in eutherian species; the other has shorter dendrites, an axon, and an axonal arbor, corresponding to the eutherian Short-axon cell. As in eutherian mammals, the dendrites of each horizontal cell type lie in the outer plexiform layer (OPL) and contact cones and the axonalarbor of the short-axon cell, contacts rods. The dendrites of the axonless cells are long, with an average length of 250 mu m, and each cell has one, sometimes two, short, stubby processes, which branch off a dendrite, traverse the inner nuclear layer, and reach the inner plexiform layer. The dendritic field of these cells is elongated, and dendrites show a preferential orientation at right angles to the trajectory of overlying ganglion cell axons. Short-axon cells have a morphology similar to that seen in other species, although the axonal arbor is relatively small. Both types of horizontal cell are generated in the first phase of retinal cell generation. (C) 1994 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/09/20 alle ore 05:25:46