Sentences with phrase «pigment changes in»

Hair loss and pigment changes in the affected area are also typical.

Not exact matches

These skin changes are due to hormonal influences on the skin pigment cells in these areas.»

During a pregnancy, your skin often experiences color changes as your hormones increase the amount of melanin (the pigment responsible for skin coloration) that you have in your body.

A black light detects changes in color or fluorescence in the skin, making pigment disorders appear to shine under the light.

Newly excavated Middle Stone Age tools and red pigment chunks from southern Kenya's Olorgesailie Basin appear to have been part of a long trend of climate - driven behavior changes in members of the Homo genus that amped up in H. sapiens.

So, because we can't sense ultraviolet light with our visual pigments, we can't even pick up on the cues that turkeys are probably using, and now that I know that this is changing, the next step is to find out whether females actually care about this change, which we don't know whether there is a behavioral response to turkeys being different in their ultraviolet reflections.

«Knowing that immune cytokines can change pigment production in melanocytes, while also knowing that chronic inflammation has the potential to increase the number of melanocytes, has clear implications for the design of future therapies to address a set of common skin disorders,» says Dr. Krueger, director of Milstein Research Program and D. Martin Carter Professor in Clinical Investigation.

More hidden details about changes made with pigments other than lead white were discovered when the painting was investigated in 1994 using neutron activation autoradiography (NAAR).

The mutations may also change skin color by blocking yellow pigments: When the researchers knocked out MFSD12 in zebrafish and mice, red and yellow pigments were lost, and the mice's light brown coats turned gray.

As proposed by Andrew Goldsworthy in 1987, cyanobacteria and later chloroplast - related protists and plants developed after microbes that used a purple pigment bacteriorhodopsin that absorbs green light dominated the oceans, and so the new photosynthetic cyanobacteria were forced to use the left - over light with chlorophyll that reflects green light, which was too complex to change even after purple - reflecting photosynthetic lifeforms were no longer dominant (Debora MacKenzie, New Scientist, September 10, 2010 — more on the evolution of photosynthetic life and plants on Earth).

Melanocytes respond by altering gene transcription, and these changes in gene expression profiles result in easily quantifiable phenotypes such as modified pigment production (a hallmark of melanocyte differentiation state) and changes in morphological cell properties.

A. Melanoma is a cancer of pigment cells and all melanomas share some characteristics but they also differ: the genetic changes which define cancers occur in the cancer cells at random and cancers are all therefore a little different.

«Pigment changes happen in the vulva frequently, particularly hormonal changes related to pregnancy and childbirth,» Dr. Dweck notes.

It's kind of like those mood lipsticks of the»70s, which were all about pigments, pH, and changes in light wavelengths.

«If it's growing, if it's changed in any way, if it's darkly pigmented or causing any eyelash loss or any dimpling, if it's scaly — all of those can be signs of an eyelid tumor,» says Dr. Taylor.

Skin cells in dogs will react to any chronic irritation by developing increasing levels of pigment, and the skin will change colour slowly, to a dark brown or blackish hue.

If you notice pigment changes or spots in your dog's eyes, consult a veterinarian to have him evaluated.

If the pigment change occurs in an area where it blocks intraocular fluid, it can cause secondary glaucoma.

If skin changes occur, see seborrhea, loss of hair on the trunk, enlargement of the tail gland and perianal glands; may see increased pigment in the skin

Studies have suggested that some cats with permanently blue eyes (in this case, Siamese) have changes in their brains because of the difference that the lack of pigment makes in the way the eye handles light.

Another common, age - associated, change in pets is extra black pigment between their hind legs.

Once the retina changes to its adult color around 3 months of age, the normal pigment sometimes masks the changes in the choroid (so - called «go normal» — read more below).

Progressive darkening of the skin may also occur as a result of skin cancer, Cancerous cells which increase in number are associated with a change in skin pigment.

The cells produce the pigment melanin, which is chemically linked to adrenaline (also known as epinephrine), the «fight or flight» hormone whose production is affected by changes in the animals» fear responses.

The feeling of reward for exploring the world and beating opponents in competitive PvP is deeply ingrained in Absolver's loot system, ranging from equipment to more cosmetic changes found in pigments.

71 ″ (2013), which emphasizes a bright yellow effect, resulting not only from a sharp change in pigment, but also the fact that the linear elements are less densely packed.

In the late works it became hard to tell whether the magnificent brushmarks — increasingly gritty, nubbled and thick — were describing the sitter so much as Freud's ever - changing vision of what could be done with pigment.

Instead, the anarchic work embraces a state of ambiguity that allows for alternative ways of processing what is seen — whether in the installation's vast changes in scale or the shifting identities of its components in which mountains become piles of raw pigment and sliced Styrofoam appears tectonic.

They have a similar place to Andy Warhol's piss - paintings (in which the splashed urine changed the colour of Warhol's metallic pigments), or Sigmar Polke's experiments in painting with light - sensitive pigments.

He uses a wide range of brushwork and surface treatments to draw attention to the varied textures of the canvas - often applying distemper (a tempera paint made with dry pigments in animal glue) in thin brushy layers - to capture qualities of light and the changing effects of the atmosphere.

Terna has changed his medium from oil to acrylic over the years, mixing his pigments with polymer on a small glass palette in his studio.

Using oil on board, canvas or ceramics, Romany uses different shades and viscosities of pigment that over time are intended to change in tone and, where thickly applied, to crack.

The work is covered in shimmering pigment, which changes with light and includes both a pattern of raster dots, and scattered hand - painted spots — a motif which has defined Sigmar Polke's work.

This sense of accumulated change is reflected in an accretion of oil paint, cold wax, powdered pigment and pastels that is worked and gouged with tools on a hard panel.

He uses a wide range of brushwork and surface treatments to draw attention to the varied textures of the canvas — often applying distemper (a tempera paint made with dry pigments in animal glue) in thin brushy layers — to capture qualities of light and the changing effects of the atmosphere.

Oil paint is the most fantastically malleable substance: once you've figured out how not to turn everything into a sludgy grey, oil paint remains wet long enough for endless changes of mind, and because of the way the pigment is held in the oil, it is beautifully luminescent.

In the artist's triptych titled «Negative Value» Polke used pigments that when burnished would change hue depending on the position of the viewer, the works were titled after stars that are difficult to tell apart and highlight the artist's interest in the esoteric — causing the artist to be incorrectly described as an alchemisIn the artist's triptych titled «Negative Value» Polke used pigments that when burnished would change hue depending on the position of the viewer, the works were titled after stars that are difficult to tell apart and highlight the artist's interest in the esoteric — causing the artist to be incorrectly described as an alchemisin the esoteric — causing the artist to be incorrectly described as an alchemist.

Not only does it better describe the case of diminishing returns (the first few molecules of pigment do the most darkening while added pigment never quite stops making it darker) but also how just a few ounces of black pigment change the temperature of a thousand pound car body sitting in the sun from luke warm to burning hot (illustrating how a tiny percentage of adulterant can have a large effect).

The increase in skin pigment, called melanin, which causes the tan color change in your skin, is a sign of skin damage.