Abstract：
:Somatostatin-like immunoreactivity (Som-LI) and glycine high-affinity uptake have been characterized in the Rana pipiens retina. These labels are found in both the outer and inner plexiform layers (OPL and IPL), suggesting that interplexiform cells (IPCs) contain both Som and glycine in this retina. In double-label experiments these labels colocalize to an abundant population of cells in the mid-inner nuclear layer (INL), in the second or third cell layer distal from the IPL. These cells have medium sized spherical or oval somas, each with a single thin descending dendrite which ramifies in the distal IPL. Processes ascending from cells at this location were not visualized by immunocytochemistry, but could be seen by autoradiography of tissue processed for glycine high-affinity uptake. In autoradiographs apparent IPCs were the most intensely labeled cell type in this retina. Som-LI is also found in two types of probable amacrine cells in the proximal INL adjacent to the IPL, neither of which is labeled by glycine high-affinity uptake. One of these is rare (about 10 cells/mm2), and has a large pyriform soma with a thick dendrite that branches in the proximal IPL. The other type is more common (324 +/- 20 cells/mm2), has medium-sized spherical or horizontally elongated elliptical somas, and has multiple thin dendrites projecting into the distal IPL. In addition to the above cell types, faint Som-LI was seen in cells of the ganglion cell layer, possibly indicating the presence of somatostatinergic ganglion cells or displaced amacrine cells.
journal_name
Brain Resjournal_title
Brain researchauthors
Smiley JF,Basinger SFdoi
10.1016/0006-8993(89)91215-8subject
Has Abstractpub_date
1989-08-21 00:00:00pages
31-44issue
1eissn
0006-8993issn
1872-6240pii
0006-8993(89)91215-8journal_volume
495pub_type
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