نتایج جستجو برای: photoreceptors

تعداد نتایج: 12523  

Alireza Ebrahimzadeh-bideskan Alireza Fazel Elham Vojoudi, Vahid Ebrahimi,

Objective(s):The aim of this study was to evaluate distribution and changes of glycoconjugates of retinal photoreceptors during both pre- and postnatal development. Materials and Methods: Tissue sections from days 15 to 20 of Wistar rat embryos and 1 to 12 postnatal days of rat newborns including developing eye were prepared for lectinhistochemistry technique. Horseradish peroxidase (HRP)-label...

Journal: :iranian journal of basic medical sciences 0
vahid ebrahimi department of anatomy and cell biology, school of medicine, mashhad university of medical sciences, mashhad, iran elham vojoudi department of anatomy and cell biology, school of medicine, mashhad university of medical sciences, mashhad, iran alireza fazel department of anatomy and cell biology, school of medicine, mashhad university of medical sciences, mashhad, iran alireza ebrahimzadeh-bideskan department of anatomy and cell biology, school of medicine, mashhad university of medical sciences, mashhad, iran

objective(s):the aim of this study was to evaluate distribution and changes of glycoconjugates of retinal photoreceptors during both pre- and postnatal development. materials and methods: tissue sections from days 15 to 20 of wistar rat embryos and 1 to 12 postnatal days of rat newborns including developing eye were prepared for lectinhistochemistry technique. horseradish peroxidase (hrp)-label...

Journal: :caspian journal of environmental sciences 2014
al et h. khalili

the big eye kilka, clupeonella grimmi, is a marine fish living in depth of 20 to 200 meter of the caspian sea. its eye and retina were processed for histological and sem studies. paraffin embedded retina was cut radially and tangentially in 5 ?m thickness and stained with hematoxylin and eosin method. the unstained sections were manipulated for sem image observations. tangential retinal section...

A. Esfandiari, A. Safavi S. Gholami

The morphology of retinal photoreceptor layer was studied in continuous light-exposed and dark-adapteddomestic male cats (Felis catus). The eyes of 12 healthy adult cats (4 in continuous light-exposed group, 4 in continuous dark-adapted group, and 4 in control group) were routinely fixed and studied by electron microscope. Results showed that the general structure of photoreceptor layer in this...

Journal: :Annual Review of Entomology 2021

Color vision is widespread among insects but varies species, depending on the spectral sensitivities and interplay of participating photoreceptors. The sensitivity a photoreceptor principally determined by absorption spectrum expressed visual pigment, it can be modified various optical electrophysiological factors. For example, screening filtering pigments, rhabdom waveguide properties, retinal...

ژورنال: Anatomical Sciences Journal 2005
Almasi Tork, Sahar, Piryaee, Abbas, Roozbehi, Amrollah, Sadeghi, Yoosef,

Purpose: In this study, TEM was used to asses the ultra structural effects of Cd on Photoreceptor and Ganglionic cells of mouce retinal layer. Materials and Methods: 30 mice hi1Vebeen used in three groups (experimental I, II & control). On 9th day of gestation, experimental groups have received a single IP injection of Cadmium- chlorid (Cd C12) solution in saline, 3 mg/kg and 5 mg/kg respectiv...

Journal: :InfoMat 2023

Natural photoreceptors enable color vision in humans, wherein the eyes detect colors and their corresponding intensities via cone rod photoreceptors, respectively. Herein, we developed an artificial broadband photoreceptor with light-color intensity detection similar to that of natural photoreceptors. The operates self-powered mode is capable perception (365–940 nm). designed metal-oxide hetero...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 1993
R J Frysztak T Crow

Classical conditioning of Hermissenda produces neurophysiological correlates in the primary sensory neurons of the pathway mediating the conditioned stimulus (CS), the type B and type A photoreceptors. Biophysical and biochemical changes intrinsic to the type B photoreceptors have been studied extensively in conditioned animals. A second site for intrinsic modification with learning has been re...

Journal: :Nature Reviews Neuroscience 2012

Journal: :iranian journal of veterinary research 2008
a. esfandiari s. gholami a. safavi

the morphology of retinal photoreceptor layer was studied in continuous light-exposed and dark-adapteddomestic male cats (felis catus). the eyes of 12 healthy adult cats (4 in continuous light-exposed group, 4 in continuous dark-adapted group, and 4 in control group) were routinely fixed and studied by electron microscope. results showed that the general structure of photoreceptor layer in this...

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