crest

Vital step in cellular migration described by UCSD medical researchers

...at alpha4 integrins are widely expressed in neural crest cells, immune system leukocytes (such as T cells), striated and smooth muscle, and neurons. For this reason, they believe the mechanism used by alpha4 integrins to localize Rac activity may participate in a wide variety of cell migratory and pathfind...

A New Species of Monkey is Discovered in Tanzania: The First in Africa for More Than 20 Years

... ft (90 cm). It is characterized by a long, erect crest of hair on its head, elongated cheek whiskers, an off-white belly and tail, and an unusual call, termed a 'honk-bark' by the authors. The monkeys occur as high as 8,000 ft (2450 m) where temperatures frequently drop below freezing; its long coat is ...

Researchers discover why melanoma is so malignant

...his early embryonic stage, Slug enables the neural crest cells to travel, and then settle, throughout the developing embryo. "Slug is a key component of the neural crest's ability to migrate," says Piyush Gupta, a MIT graduate student in Weinberg's lab and first author on the paper. "Following its activa...

Duck-billed dino crests not linked to sense of smell

... upwards into the crest, as we would expect if the crest was used for the sense of smell," Evans says. "It appears that the brain changed very little from their non-crested dinosaur ancestors, and that the primary region of the sense of smell was located right in front of the eyes ?and coincidentally, t...

FSU biologist says new dinosaur is oldest cousin of Tyrannosaurus rex

... the sexiest," Erickson said, what with its flashy crest atop its small head –?an extravagant ornament like...d of its relatively long 13-year life. Its cranial crest would have reached its full size by then, thus providing an accurate model for scientists. The bones...

UF scientists trace origin of shark's electric sense

... of Evolution & Development, identifies neural crest cells, which are common in vertebrate development,...ts found two independent genetic markers of neural crest cells in the animal's electricity-sensing organs. Analysis shows these cells migrate from the brain ...

Making a face: A new and earlier marker of neural crest development

...tiplex RT-PCR of mRNAs -- that formation of neural crest cells in chick embryos is independent of both meso... also identify, Pax7, as an early marker of neural crest formation and prove that its function is required in the earliest stages of development. The neura...

Stem cells found in adult skin can be transplanted and function in mouse models of disease

...o generating the peripheral nervous system, neural crest stem cells generate other tissues such as bone, cartilage, some types of muscle, and even part of the heart. In The Journal of Neuroscience paper, the research team found that SKPs can efficiently generate a type of glial cell, called Schwann cells,...

Scientists describe new African monkey genus ?first in 83 years

... tail. They have a "crown" made up of a very broad crest of long, erect hair. Adults make a distinctive, loud, low-pitched honk-bark. An omnivore, Kipunji eat leaves, shoots, flowers, bark, fruit, lichen, moss and invertebrates. These predominantly arboreal monkeys are endemic to Tanzania and known to li...

Stormy days ahead for coral reefs

...y even followed the predicted trends from the reef crest to the reef back." The researchers say that more severe storms, by themselves, would probably not pose a large threat to reefs. "Corals are adapted to life in stormy seas. Even the vulnerable species are quite stable when they're young," says...

Coral reefs are increasingly vulnerable to angry oceans

...y even followed the predicted trends from the reef crest to the reef back." The researchers say that more severe storms, by themselves, would probably not pose a large threat to reefs. "Corals are adapted to life in stormy seas. Even the vulnerable species are quite stable when they're young," said ...

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

... the molecular signature of these epidermal neural crest stem cells in the mouse, their research resolves ...ovides a valuable resource for future mouse neural crest stem cell research. A report on the research from Dr. Maya Sieber-Blum's laboratory, co-authored by...

Scientists discover new species of distinctive cloud-forest rodent

...d blocky head, and thickly furred tail. A blackish crest of fur on the crown, nape and shoulders add to its distinctive appearance. Isothrix barbarabrownae, as the new species has been named, is described in the current issue of Mastozoología Neotropical (Neotropical mammalogy), the principal mammalogy ...