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The Journal of General Physiology|December 1, 1978
Rod sensitivity and visual pigment concentration in XenopusG A Engbretson, P WitkovskyThe Journal of General Physiology|December 1, 1978
Formation, conversion, and utilization of isorhodopsin, rhodopsin, and porphyropsin by rod photoreceptors in the Xenopus retinaP Witkovsky, G A Engbretson, H RippsVision Research|December 1, 1993
Disk shedding in the absence of a pigment epithelium in the lizard parietal eyeJ Ahmed, G A EngbretsonVisual Neuroscience|December 2, 1999
Electroretinogram of the parietal eye of lizards: photoreceptor, glial, and lens cell contributionsE Solessio, G A EngbretsonNature|July 29, 1993
Antagonistic chromatic mechanisms in photoreceptors of the parietal eye of lizardsE Solessio, G A EngbretsonProceedings of the National Academy of Sciences of the United States of America|February 1, 1976
Parietal eye of the lizard: neuronal photoresponses and feedback from the pineal glandG A Engbretson, C M LentThe Journal of Comparative Neurology|March 1, 1987
Serotonin and dopamine in the retina of a lizardG A Engbretson, B A BattelleMicroscopy Research and Technique|August 15, 2000
Photoreceptor classes and transmission at the photoreceptor synapse in the retina of the clawed frog, Xenopus laevisP WitkovskyThe Journal of Comparative Neurology|December 22, 1991
Glial cells of the parietal eye: structural and biochemical similarities to retinal Müller cellsG A Engbretson, P J LinserThe Journal of Comparative Neurology|July 1, 1982
Neuropeptide immunoreactivity in Limulus. I. Substance P-like immunoreactivity in the lateral eye and photocerebrumS C Chamberlain, G A EngbretsonPageof 9