A retinoid compound (C20H28O), closely related to vitamin A, which is a component of the visual pigments in the eye. It is also called retinaldehyde and vitamin A aldehyde.
A form of vitamin A called retinal is responsible for transmitting light sensation in the retina of the eye. Deficiency of vitamin A leads to night blindness.
The light-absorbing pigment in rods and cones of the vertebrate eye. retrovirus( reh-troh- vy-rus) [L. turning back] An RNA virus that reproduces by transcribing its RNA into DNA and then inserting the DNA into a cellular chromosome; an important class of cancer-causing viruses.
Light-absorbing molecule common to all photopigments, related to vitamin A.
A visual pigment derived from vitamin A.
the pigment portion of the photopigment rhodopsin; also called visual yellow
form of vitamin A; fat soluble; less effective than tretinoin; relatively unstable. May irritate skin in high concentrations.
either of two yellow to red retinal pigments formed from Rhodopsin by the action of light
Detachment: Separation of sensory retina from the underlying pigment epithelium. This disrupts visual cell structure and thus markedly disturbs vision. Almost always caused by a retinal tear; often requires immediate surgical repair.
A derivative of vitamin A which absorbs light. Retinal is a component of visual receptor proteins.
the natural form of vitamin A.
the aldehyde of vitamin A.
1) In or having to do with the retina; 2) The chromophore contained in human photopigments.
The light-absorbing portion of visual pigment molecules. Derived from b-carotene.
The light absorbing photopigment, a derivative of Vitamin A, found in the eyes light receptors.
The light-absorbing chromophore group that is chemically attached to the opsin protein to form a visual pigment molecule.
also called "retinaldehyde" and a derivative of vitamin A. Retinal is one of the molecules responsible for light sensitivity.
Retinal, technically called retinene1 or "retinaldehyde", is a light-sensitive retinene molecule found in the photoreceptor cells of the retina. Retinal is the fundamental chromophore involved in the transduction of light into visual signals, i.e. nerve impulses, in the visual system of the central nervous system.