Sentences with phrase «pigment cells in»

«The lack of pigment on the head causes the pigment cells in the inner ear to fail to develop, or they may be lacking entirely,» Strain says.

«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.

Equally impressive is the ability of a caudal fin to regenerate bone, nerves, blood vessels, epidermal, and pigment cells in about 7 - 10 days following complete amputation.

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

Not exact matches

Even complex biochemical compounds, such as the red respiratory pigment hemoglobin, are found in simple single - celled animals and in some plants.

I find it incredible, that so many have completely accepted the idea that we could get a single cell from inorganic matter, that the eye could evolve from beginning with a pigmented spot..., not to mention many times over, with all the different eyes around even in primitive creatures,...

Single celled algae such as chlorella and spirulina are rich in enzymatic pigments phycocyanin & phycoerythrin which help carry out essential metabolic functions.

Jaundice is due to a buildup in the blood of bilirubin, a yellow pigment that comes from the breakdown of old red blood cells.

Jaundice is a result of buildup in the blood of the bilirubin, a yellow pigment that comes from the breakdown of older red blood cells.

A newborn has more red blood cells than his body needs, and often, when a baby's immature liver can't process them quickly enough, a yellow pigment called bilirubin (a by - product of the red blood cells) builds up in the blood.

Jaundice is due to a buildup in the blood of bilirubin, a yellow pigment which comes from the breakdown of old red blood cells.

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

A fairly common condition, this is due to an excess of bilirubin (a yellow - colored pigment of red blood cells) in your baby's blood.

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.

Researchers used stem cells to create retinal pigment epithelium cells, which were transplanted into a patient's retina (left) in an area depicted by the black circle.

A seaweed's color is determined by the combination of pigments housed in its chloroplasts or plastids (a specialized substructure within its cells).

They published their findings February 6, 2017, in Pigment Cell and Melanoma Research.

Melanoma occurs when melanocytes — cells that make pigment in skin and hair — undergo a malignant transformation.

Melanocytes, healthy skin cells that form the pigment melanin, come from neural crest cells, which are created in the spinal column.

The shape and chemical composition of these granules is identical to organelles found in cells called melanosomes; these being responsible for creating and storing the pigment melanin.

In people with severe eye disease, transplants made from embryonic stem cells (in region of black dotted circle) appear safe, and became larger and more pigmented over time (rightIn people with severe eye disease, transplants made from embryonic stem cells (in region of black dotted circle) appear safe, and became larger and more pigmented over time (rightin region of black dotted circle) appear safe, and became larger and more pigmented over time (right).

The volunteers, ranging in age from 20 to 88, received injections under their retina of a particular type of eye cell, retinal pigment epithelium (RPE) cells, which were derived from hESCs in the lab.

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.

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

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.

In either case, it is assumed that the pigment - carrying cell lives forever, allowing the tattoo to be more or less permanent.

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

«Previous studies primarily focused on neurons and the retinal pigment epithelium cells as culprits in degeneration,» said Eroglu, who is also a member of the Duke Institute for Brain Sciences (DIBS).

More recently, however, researchers have suggested that macrophages — specialized immune cells that reside in the dermis — are attracted to the wound inflicted by the tattoo needle and gobble up the tattoo pigment just as they would normally engulf an invading pathogen or piece of a dying cell.

Three years after publishing a groundbreaking paper in which she isolated adult retinal pigment epithelial stem cells, Temple is in preclinical trials with rats.

In nature, the Cyphochilus beetle, which is native to Southeast Asia, produces its ultra-white colouring not through pigments, but by exploiting the geometry of a dense network of chitin — a molecule which is also found in the shells of molluscs, the exoskeletons of insects and the cell walls of fungIn nature, the Cyphochilus beetle, which is native to Southeast Asia, produces its ultra-white colouring not through pigments, but by exploiting the geometry of a dense network of chitin — a molecule which is also found in the shells of molluscs, the exoskeletons of insects and the cell walls of fungin the shells of molluscs, the exoskeletons of insects and the cell walls of fungi.

When Kaufman, Zon and colleagues looked to see what was different about these early cancer cells, they found that crestin and the other activated genes are the same ones turned on during zebrafish embryonic development — specifically, in the stem cells that give rise to the pigment cells known as melanocytes, within a structure called the neural crest.

The researchers say such «hypopigmentation» occurs because chloroquine poisons pigment - producing cells in hair follicles.

However, in this case the target cells were pigment ones, which eventually die off to be replaced by new ones.

Wei Long Ng explained: «The two - step bioprinting strategy involves the fabrication of hierarchical porous collagen - based structures (that closely resembles the skin's dermal region), and deposition of epidermal cells such as keratinocytes and melanocytes at pre-defined positions on top of the biomimetic dermal skin constructs, to create 3D in - vitro pigmented human skin constructs.

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.

Researchers at the RIKEN Center for Developmental Biology in Kobe plan to generate replacement retinal pigment epithelial cells from iPS cells generated from patients suffering age - related macular degeneration.

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

Scientists already knew that stem cells contained in a bulge area of hair follicles are involved in making hair and that SCF is important for pigmented cells, said Dr. Le, a member of the Hamon Center for Regenerative Science and Medicine.

Similar patches have already had some positive results for the «wet» form, in which blood vessels invade and destroy the retinal pigment epithelial cells.

To test their idea for the dry form, Amir Kashani of the University of Southern California in Los Angeles and his colleagues coated 6 by 4 - millimetre slithers of polymer with retinal pigment epithelial cells they had grown, then transplanted these into four people.

Ramachandran suspects that there are specialized cells in their brains that can recognize particular patterns and then tell the skin what pigment bodies to expand or contract.

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

The authors say that pigment cells may be preserved in other samples of this phosphatized skin — people just haven't known to look for it.

They first pooled together information about colors in related modern snake species in the same family, Colubridae (which contains 70 % of all known snakes): specifically, which combinations of pigment cells produce which colors.

With the passage of time, patches of retinal pigment epithelial cells may die, resulting in bare spots known as geographic atrophy.

About 10 % of cases are due to a mutation in retinal pigment epithelium 65 (RPE65), a gene that codes for an enzyme that helps retinal cells make rhodopsin.

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

Melanopsin is a member of the opsin family, and is more closely related to photopigments in invertebrate visual cells than to pigments in vertebrate visual (rod and cone) cells.