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The distribution of two calcium-binding proteins, calbindin D-28K (CB) and calretinin (CR) was studied in the retina of a cladistian, Polypterus senegalus, and three cartilaginous fishes (Scyliorhinus canicula, Raja undulata and Torpedo marmorata). Western blot analysis of brain extracts revealed the lack of cross-reactivity of the used antibodies. In Polypterus, CB and CR immunoreactivities were...
The presence of thyrotropin-releasing hormone-immunoreactive (TRHir) amacrine cells is described for the first time in the retina of a teleost. These amacrine cells were mostly located in the inner nuclear layer, with occasional perikarya in the ganglion cell layer. Their processes formed a conspicuous plexus at the level of the ganglion cell perikarya. The TRHir amacrine cells appeared in posthatching...
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