Sentences with phrase «lighter pigment cells»

Not exact matches

The carotene compound is converted to Vitamin A by the body where it is used to maintain the skin and assist in making cells that sense light as well as the pigments in the eye.

Retinal cells contain three yellow pigments — lutein, zeaxanthin and meso - zeaxanthin — which absorb near - ultraviolet light, protecting the eye from its damaging effects and reducing glare.

A layer of cells called the retinal pigment epithelium (RPE) is essential for supporting and nourishing the retina cells that capture light for vision.

Similar patches and treatments have already been tested against the «wet» form — in which blood vessels invade and destroy the retinal pigment epithelial cells that nourish and support the photoreceptor cells that capture light.

In this pilot study to test the safety of putting iPS - derived cells into humans, the six are all receiving a graft of new retinal pigment epithelial cells, which serve to maintain the eye's light - sensing cells.

Bella et al. show that coating the cells with a water - proof fluorinated polymer that contains pigments to absorb ultraviolet light and re-emit it in the visible range can boost cell efficiency and limit photodegradation.

Her efforts allowed her to discover that single - cell plants that were exposed to aldehydes did end up with less chlorophyll — the green pigment in plants that absorbs light and plays a key role in photosynthesis.

By coupling nerve cell receptors to light - sensitive retinal pigments, Prof Dr Olivia Masseck researches into the causes of anxiety and depression.

The light sensitivity has recently been found to be due to pigments called opsins, expressed in cells close to the animal's nerve net.

When skin cells are damaged by ultraviolet light they produce more pigment, which makes skin appear darker.

It has been designed for treating the «dry» form of macular degeneration, caused by deposits on the retina gradually killing retinal pigment epithelial cells, which support light - capturing cells.

The pigment is needed by photoreceptor cells — the retina's light - sending rods and cones — and when RPE65 is mutated, the photoreceptor cells gradually die.

Previous research, some of it by members of the current team, had shown that KITLG triggers the production of pigment - producing cells called melanocytes in response to UV light.

One of the eight cells can express one of two different light sensitive pigments.

In AMD, the retinal pigment epithelial (RPE) cells that support the cells in the eye that detect light wear out, and there is also the growth of abnormal, leaky blood vessels below the retina.

The key to these makeovers are special pigment - containing cells called chromatophores, which, when activated by light, can spread their pigments out or bunch them up to change the skin's overall color or pattern.

Here we report that in addition to producing an ommochrome body pigment, the planarian flatworm Schmidtea mediterranea generates porphyrins in its subepithelial pigment cells under physiological conditions, and that this leads to pigment cell loss when animals are exposed to intense visible light.

The experiments also show that starvation increases the rate of pigment cell loss in light - exposed flatworms, which mirrors the worsening of disease symptoms some porphyria patients experience when they diet or fast.

With age, our eyes accumulate waste in retinal pigment epithelium (RPE), which supports the life and function of photoreceptors (light sensitive cells in the eye); in advanced stages, RPE and photoreceptors die.

Third place went to Charlie Granger, a PhD candidate in optics, who used adaptive optics technology to show the natural fluorescence of retinal pigment epithelial cells, which form a layer only one cell deep, on the backside of the eye's light - sensitive retina.

A gene called Alx3 blocks the differentiation of pigment - producing cells in the skin of the African striped mouse, thus generating the mouse's characteristic light - colored stripes, a new...

And the good news is there are a number of treatment options available including camouflage using make - up and self tanning lotions; micro-tattooing may be useful for small stable areas of vitiligo such as face, lips and hands; light therapy; the transfer of a patient's own pigment cells from unaffected skin into the vitiligo - affected cells and laser treatments.

This device sends a beam of light that is absorbed by the color brown into the deepest layers of skin, essentially destroying the pigmented cells that created the spot.

Lipoic acid - Displaying potent antioxidant activity, lipoic acid can protect against free radical damage to the retinal pigment cells from UV light exposure (7).

The light beam targets dark patches below the skin surface, breaking down the pigmented cells that cause the spot.

These are specialised cells that contain pigments that absorb light, and there are two types of receptors: cones and rods.

Its eye includes two different kinds of ommatidium; each contains nine light sensitive cells, of which seven contain a pigment whose absorption spectrum peaks in the green part of the spectrum, but in one type the remaining two receptors have peak absorption in the blue and in the other type they have peak reception in the ultra violet.