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In search of the visual pigment template.
Absorbance spectra were recorded by microspectrophotometry from 39 different rod and cone types representing amphibians. reptiles, and fishes, with A1- or A2-based visual pigments and lambdamaxExpand
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Membrane protein diffusion sets the speed of rod phototransduction
Retinal rods signal the activation of a single receptor molecule by a photon. To ensure efficient photon capture, rods maintain about 109 copies of rhodopsin densely packed into membranous disks. ButExpand
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The photoreceptors and visual pigments of the garter snake (Thamnophis sirtalis): a microspectrophotometric, scanning electron microscopic and immunocytochemical study
Abstract Scanning electron microscopy, immunocytochemistry, and single cell microspectrophotometry were employed to characterize the photoreceptors and visual pigments in the retina of the garterExpand
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Photoreceptors and visual pigments in the red-eared turtle, Trachemys scripta elegans.
Absorbance spectra of cone outer segments and oil droplets were recorded microspectrophotometrically in the retina of the red-eared turtle, Trachemys scripta elegans. There are four cone visualExpand
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Two Temporal Phases of Light Adaptation in Retinal Rods
Vertebrate rod photoreceptors adjust their sensitivity as they adapt during exposure to steady light. Light adaptation prevents the rod from saturating and significantly extends its dynamic range. WeExpand
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Visual pigments and the photic environment: The cottoid fish of Lake Baikal
The endemic cottoid fish of Lake Baikal in Eastern Siberia offer a singular opportunity for examining within a number of closely related species, the relationships of visual pigments, photoreceptorExpand
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Microspectrophotometric and immunocytochemical identification of ultraviolet photoreceptors in geckos.
Retinas of the nocturnal geckos, Hemidactylus turcicus, Hemidactylus garnotii, and Teratoscincus scincus, were studied with microspectrophotometry and immunocytochemistry against various visualExpand
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Visual cells and visual pigments of the lamprey,Lampetra fluviatilis
SummaryThe long and short photoreceptors in the lamprey retina possess similar cone-like outer segments where many disks are infoldings of the outer plasmic membrane. Following the treatment by theExpand
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G-Protein βγ-Complex Is Crucial for Efficient Signal Amplification in Vision
A fundamental question of cell signaling biology is how faint external signals produce robust physiological responses. One universal mechanism relies on signal amplification via intracellularExpand
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Light-induced changes of extracellular ions and volume in the isolated chick retina-pigment epithelium preparation.
To better understand the mechanisms of extracellular space volume regulation and their possible effects on retinal function, light-induced changes in the concentrations of the principal extracellularExpand
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