Localization of serotoninlike-immunoreactive amacrine cells in the larval tiger salamander retina.

The Journal of Comparative Neurology
S Z YangC B Watt

Abstract

Light microscopic immunocytochemistry was used to study the populations of serotoninlike-immunoreactive cells in the larval tiger salamander retina. Of 1,135 serotonin-immunostained cells observed in transverse cryosections, 87% were identified as amacrine cells, whereas 13% were tentatively designated as displaced amacrine cells. The somas of the vast majority of serotonin-amacrine cells were situated in the innermost cell row of the inner nuclear layer. Only a few serotonin-immunostained amacrine cell somas were observed in the second row of cells from the inner nuclear layer. Serotonin-immunoreactive processes generally appeared as a diffuse plexus distributed evenly throughout all levels of the inner plexiform layer. As determined in whole-mount preparations, serotonin-amacrine cells were divisible into two populations on the basis of the diameters of their somas. Large cells (45%) ranged from 16 to 19 microns in diameter with the vast majority measuring 17-18 microns. Smaller and sometimes less intensely stained cells ranged from 14 to 16 microns in diameter with the large majority measuring 15 microns. The diameters of serotonin-displaced amacrine cells ranged from 19 to 22 microns with the large majority measuring 20 mic...Continue Reading

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Sep 18, 1992·Brain Research. Developmental Brain Research·B Zhu, C Straznicky
Sep 1, 1991·Visual Neuroscience·C Versaux-BotteriJ Nguyen-Legros
Sep 1, 1992·Visual Neuroscience·B ZhuC Straznicky
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Dec 15, 1993·The Journal of Comparative Neurology·Q Liu, E A Debski
Feb 6, 1995·The Journal of Comparative Neurology·Q Liu, E A Debski

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