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Tag: "follicles" at biology news

MU researchers to study the status of black bears in Missouri

...s this summer, they will extract DNA from the hair follicles and use that DNA to estimate the number of bears, the gender ratio of male to female bears, where the bears are migrating from and if they are reproducing. “This study is a good example of the use of cutting-edge molecular biology in the manageme...

First demonstration of new hair follicle generation in an animal model

...nnsylvania School of Medicine have found that hair follicles in adult mice regenerate by re-awakening genes onc...area of injury. Unexpectedly, the regenerated hair follicles originated from non-hair-follicle stem cells. “We’ve found that we can influence wound healing wi...

Stem cells found in adult hair follicles may provide alternative to embryonic stem cells

...al crest stem cells are found in the bulge of hair follicles and have characteristics that combine some advantages of embryonic and adult stem cells, according to lead researcher, Maya Sieber-Blum, Ph.D., professor of cell biology, neurobiology & anatomy. Similar to embryonic stem cells, they have a high d...

New technology addresses female fertility preservation

...his delay of treatment is not an option. Immature follicles (the female egg and surrounding somatic cells) can...three-dimensional culture system that encapsulates follicles and allows immature eggs to grow and mature in vitro. (A follicle is a small spherical group of spec...

Bedsores and bald hides: Novel roles revealed for a 'scaffolding' protein

...fficient hair growth. When cells of normal hair follicles die, they follow a specific and genetically controlled death program. The team found that the K17 cytoskeleton protein is required to physically interact with a protein that is known to activate cell death and prevent follicle cells from dying before...

A surprising pair of proteins help make healthy eggs

... mice. Without this protein, egg-producing ovarian follicles didn't develop properly. The result: infertile mice. The new research underscores TAF4b's central role in normal reproduction. The Brown and Berkeley team found that in the granulosa cells of the ovary, it triggers production of another protein, cal...

USC researchers track down the stem cells that create feathers

...taking the purported stem cells from quail-feather follicles and transplanting them into a chicken host. (Quail cells can be differentiated from chicken cells by cellular markers.) This demonstrated that only the labeled cells were pluripotent. These stem cells, the researchers found, are well protected in th...

Israeli scientists successfully transplant frozen-thawed ovaries in sheep

...er, adhesions and the loss of blood to the ovarian follicles that occurs during the interval before new blood v...ozen-thawed ovaries produced comparable numbers of follicles as the fresh control ovaries. The next objective was to see if they could remove, freeze and thaw ...

Human Eggs Can Develop From Ovarian Surface Cells In Vitro

...SE cells and assemble together to form new primary follicles -- the structures that grow and rupture during ovu...educed fertility and premature menopause, who lack follicles in their ovaries, to have a better chance of conceiving through in vitro fertilization. Eventually, ...

First frozen egg baby born in Canada

... insemination (IUI). Because she produced too many follicles in her ovaries, the treatment cycle had to be cancelled because of a high risk of multiple-fetal pregnancy. As an alternative treatment, she had eggs collected from her ovaries, which were then frozen in liquid nitrogen at ?96ºC. After a period of tw...

Hirsute Or Hairless? Two Proteins May Spell The Difference

... you're a cat fancier, you're well aware that hair follicles are expendable. The product of a spontaneous mutat... developmental biology. The dispensability of hair follicles makes them the perfect model system for studying this question—specifically, how structures and orga...

Transport System Smuggles Medicines Into Brain

... molecules internally and directly at the maturing follicles of the growing, colorful plumage. In addition, these pigments may play a valuable role in maintaining the health of parrots. McGraw cites an independent study on the parrot pigments that suggests that they can act as anti-oxidants to quench free rad...

ASU researchers finds novel chemistry at work to provide parrot's vibrant red colors

... molecules internally and directly at the maturing follicles of the growing, colorful plumage. In addition, these pigments may play a valuable role in maintaining the health of parrots. McGraw cites an independent study on the parrot pigments that suggests that they can act as anti-oxidants to quench free rad...

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