Sentences with phrase «producing pigments»

Unseasonably warm summers appear to be abetted by microbes and algae that grow on the increasingly wet surface of the ice sheet, producing pigments that boost the ice's absorption of solar energy.

It also improves vision by producing pigments in the retina of the eye.

Cells called melanocytes produce the pigments that colour hair and their numbers are kept topped up by stem cells.

Mature melanocytes, which produce pigments in the upper layer of the skin, contribute to melanoma formation.

Thomas added: «Nearly all animals can produce the pigment melanin.

It arises from mutations affecting cells, called melanocytes, that produce the pigment melanin, which gives color to those body parts.

As well as the potential to produce pigment - correct skin grafts, the team's 3D bioprinting method could also be used to develop skin constructs for toxicology testing and fundamental cell biology research.

One produces pigment for the hair before dying off, while the other becomes a new melanocyte stem cell.

Melanoma is a cancer of the skin cells that produce pigment, called «melanin,» that produces color in our skin.

In reptiles, amphibians, and other groups, color mostly comes from chromatophores — cells within the skin that hold color - producing pigment molecules.

The pigment doesn't dissolve easily, so it sticks around in fossils, making it the easiest ancient color - producing pigment to find and study.

Unlike normal fish skin cells, they were tightly clustered and produced pigment in areas where there usually is none.

In a 1987 Nature paper, a team led by plant geneticist Peter Meyer, then with the Max Planck Institute for Plant Breeding Research in Cologne, Germany, showed that inserting a maize gene into a petunia enabled it to produce the pigment pelargonidin and take on a salmon color.

More specifically, they are looking at the cells that produce the pigment that gives the iris its color.

«The pigment in the feathers is black, but the shapes of the melanosomes that produce that pigment are what make the colors in hummingbird feathers that we see.»

«These white markings occur not because the dogs can not produce pigment but because they completely lack pigment cells in the skin in the areas that have white markings», says Izabella Baranowska Körberg who obtained her PhD degree at SLU on a thesis in which this study was included.

The condition occurs when the cells responsible for producing pigment stop functioning or die.

The cause is thought to be a breakdown of a certain enzyme called tyrosinase, which is responsible for producing 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.

It has to do with the difficulty of obtaining the color itself, since a limited number of plants and insects have naturally produced the pigment.

Cennini described how the gem rough had to be pounded harder than a bad lawyer's table, mixed with melted resin, wax and oil, wrapped in fine cloth, and kneaded three times in a lye bath to produce a pigment worth its weight in gold and fit for the painted robes of Christ and the Virgin Mary.

Not exact matches

There are only 2 predimonently «brown» and «red»... most all humans produce predominately produce brown pigment, people, with lighter skin produce less but also produce brown pigment called eumelanin, red heads tend to produce not only eumelanin, but large amounts of phenomelanin, hence why they will end up with red hair and freckles....

Usually I'll add at least 3 - 4 cups of kale or spinach (or both) into my morning smoothie which turns a weird purplish gray color because blending purple and green obviously produce a weird pigment.

These are the result of pregnancy hormones, which cause the body to produce more pigment.

It's possible for them to change depending on the amount of melanin, which refers to the pigments of color the skin cells produce.

The placenta may release a hormone that stimulates melanocytes, the cells that produce melanin to pigment your skin or give you a suntan.

When these cells break down after birth, they produce a yellow pigment called bilirubin, which circulates in the blood.

This will produce a more vibrant color than using the boiling method (above) as the pigment is not diluted by water.

From the embryonic stem cells, the researchers produced a type of tissue called retinal pigment epithelium (RPE).

To gather more information, researchers used an X-ray fluorescence spectrometry device, which produces grayscale images of the chemical elements of the underlying paint that are characteristic of the pigments used.

Because these other skin cell types showed no signs of expansion or transformation, our analysis highlights pigment - producing cells as the originators of melanoma.»

The team was surprised to observe that these very aggressive tumors arise from mature, pigment - producing cells called melanocytes.

To prove it worked, he started with a strain of the E. coli bacterium that produced small quantities of lycopene, the pigment that makes tomatoes red.

Most organisms» colors are produced by pigments that absorb certain wavelengths of light, but not others, to create a color.

This gene, which controls the amount of melanin pigment produced, accounts for about 74 percent of the total variation in people's eye color.

And in the absence of pigment in the eye, retinal photoreceptors can become overstimulated and send confusing messages to the brain, which often also produce a nystagmus, or fluttering of the eyes.

This faintly colored image was «painted» by bacteria (Escherichia coli) that produce colored pigments in response to light.

The animals produce a limited amount of fluorescing pigment, which degrades as it fluoresces.

Exposure to the light makes the bacteria turn on a gene that kicks off a chemical reaction, producing a corresponding red, green, or blue pigment.

Many of the shimmering colors in a butterfly's wings are produced not with pigments, like the melanin that tints our skin, but with nanostructures (pdf).

Melanoma is a cancer that originates in melanocytes, the cells that produce the skin - color pigment melanin.

Butterflies aren't the only animals who harness nanotech for cosmetic purposes; so do birds, whose dazzling array of colors comes from a combination of pigment - producing cells and nanoscale design.

Florigene researchers had to splice a gene that produces the blue pigment delphinidin into rose DNA and also turn off the rose's natural red pigment gene.

The components of algae are suitable not only for producing biofuels but also pigments, cosmetics components or hydrogels.

Based on this the team has produced a «high risk» map showing regions of the painting that contain light - sensitive pigments that need to be monitored closely and protected from light exposure.

Some, such as Chlamydomonas nivalis, spread first as greenish blooms as they begin to photosynthesize, and then turn a reddish colour as they produce carotenoid pigments to protect themselves from the sun's ultraviolet rays.

It is a novel method for producing color images on black - and - white photographic paper without using pigments or dyes

The scientists found that the IL - 17 and TNF cytokines were disrupting the pigment production of patients» melanocytes — the cells that produce melanin, the pigment that gives skin its color.

In the study, human melanocytes — the cells that produce the skin pigment melanin — were exposed to estrogen levels usually seen during pregnancy.

In contrast, genetically engineered tomatoes assume different shades of red - violet, depending on whether they produce betalains (second from left), pigments called anthocyanins (second from right) or betalains together with anthocyanins (far right).