Summary
Injections of 125I wheat-germ agglutinin or horseradish peroxidase into the eyes of turtles labeled retrogradely cells in a mesencephalic reticular area lying between the trochlear and the isthmic nuclei. Their number was small and they were found predominantly contralateral to the injected eye. These reticular neurons were not labeled following control injections into the orbital cavity and therefore are considered to project to the retina similar to correspondingly located neurons in some other vertebrates.
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Schnyder, H., Künzle, H. The retinopetal system in the turtle Pseudemys scripta elegans . Cell Tissue Res. 234, 219–224 (1983). https://doi.org/10.1007/BF00217415
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DOI: https://doi.org/10.1007/BF00217415