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The retinae of Prototherian mammals possess neuronal types that are characteristic of non-mammalian retinae.
- Source :
-
Visual neuroscience [Vis Neurosci] 1990 Jul; Vol. 5 (1), pp. 61-6. - Publication Year :
- 1990
-
Abstract
- This study has shown that the retinae of Prototherian (egg-laying) mammals possess two neuronal types that are present in non-mammalian retinae, but absent or morphologically different in the retinae of Eutherian (placental) mammals. First, endogenous serotonin-like immunoreactivity has been localized in a population of presumptive amacrine cells in the platypus retina, the first such report in a mammalian retina. Second, the protein kinase C-immunoreactive (PKC-IR) bipolar cells in the echidna retina appear similar to the PKC-IR bipolars in the chicken retina, in that their dendrites give rise to a Landolt's club and their axons are multistratified. By contrast, the PKC-IR rod bipolar cells in the rabbit and in the brushtail possum, a Metatherian (marsupial) mammal, have no Landolt's clubs and their axons form terminal lobes in the innermost stratum of the inner plexiform layer.
- Subjects :
- Animals
Antibodies, Monoclonal
Chickens anatomy & histology
Fluorescent Antibody Technique
Mammals classification
Neurons metabolism
Opossums anatomy & histology
Platypus anatomy & histology
Protein Kinase C metabolism
Retina metabolism
Serotonin metabolism
Species Specificity
Tachyglossidae anatomy & histology
Mammals anatomy & histology
Neurons cytology
Retina cytology
Subjects
Details
- Language :
- English
- ISSN :
- 0952-5238
- Volume :
- 5
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Visual neuroscience
- Publication Type :
- Academic Journal
- Accession number :
- 2271460
- Full Text :
- https://doi.org/10.1017/s0952523800000079