Tag: "limbs" at biology news
Chickadee, nutchatch presence in conifers increases tree growth, says CU-Boulder study
... mesh netting to exclude birds from ponderosa pine limbs
in the U.S. Forest Service-managed Manitou Springs Experimental Forest northwest of Colorado Springs for three years. The results showed that branches on 42 trees rigged to exclude birds had 18 percent less foliage and 34 percent less wood growth by...
Coelacanth fossil sheds light on fin-to-limb evolution
... To understand the developmental evolution of the limbs
of tetrapods [four-limbed vertebrates], we shouldn...fins skeletons. If youre going to figure out how limbs
evolved, you need to have a good idea about pre-conditions, Friedman said. You need to know what the...
UT and Atom Sciences Collaborate on NIH grant to develop test for major african disease
... lesion that can lead to infections so severe that limbs
may simply fall off, and that the body is unable to fight. The disease is particularly difficult to cure without removing the infected area from the person's body. Buruli ulcer is caused by the bacterium Mycobacterium ulcerans. The disease itself i...
Mutating the entire genome
...on, resulting in mutant mice with abnormally short limbs
and tail (see photo with this news release)....
UD awarded $11M for osteoarthritis research and unique mentoring program for women scientists
...on that normalizes quadriceps strength between the limbs
after total knee replacement--one of the most common surgeries in the U.S.-- will ultimately decrease the progression of osteoarthritis of the hip and knee. Jill Higginson, assistant professor of mechanical engineering, is investigating the muscle ...
Agonized death throes probable cause of open-mouthed, head-back pose of many dino fossils
...ck, jaws open, back and tail reflexed backward and limbs
contracted," said Kevin Padian, professor of integ...e, tipping the head and tail back, contracting the limbs
and opening the mouth. Padian and Faux urge reanalysis of many fossil finds, referring, for exampl...
New genetic data overturn long-held theory of limb development
Long before animals with limbs
(tetrapods) came onto the scene about 365 million ... the genetic and developmental toolkit that builds limbs
with fingers and toes was around long before the acquisition of limbs, according to the scientists, ...
Ape gestures offer clues to the evolution of human communication
...nzees use manual gestures of their hands, feet and limbs
more flexibly than they do facial expressions and vocalizations, further supporting the evolution of human language began with gestures as the gestural origin hypothesis of language suggests. This study appears in the current issue of the Proceedings...
Nanotechnology offers hope for treating spinal cord injuries, diabetes and Parkinson's disease
...have regained the ability to walk using their hind limbs
six weeks after a simple injection of a purpose-designed nanomaterial. A video of Dr. Stupp discussing his groundbreaking research with collaborator John Kessler is available on April 24 at www.nanotechproject.org/114 . "By injecting molecules...
A 'traffic light' for neurons means 'go' for improving brain research
...al columns, perhaps restoring some function to the limbs
of paralyzed patients. Finally, the technique could be useful in teasing out the largely unknown functioning of healthy brains. "One day we'd like to be able to understand the organization of the brain," Zhang says. "How do different types of cel...
Research project tackles 'regeneration' gap
...d blood with scientists who study how tissues and limbs
develop in a variety of organisms. "A salamander can be injured to the point that it loses its limbs
or part of its spinal column, yet a few weeks later youll see it scurrying across your lanai," said ...
Fossil discovery marks earliest record of limbloss in ancient lizard
...ing 100 million years ago. We now know that losing limbs
isn't a new thing and that lizards were doing it m... The researchers soon realized the lizard's front limbs
were not formed during development. "There was a moment when I said, 'I think we stumbled on a new f...
Paleontologists discover new mammal from Mesozoic Era
...and worms. It has a long body, short and sprawling limbs
and claws that were ideal for either digging or living on the ground. In addition to its unique ear structure, Yanoconodon also has a surprisingly high number of 26 thoracic ("chest") and lumbar ("waist") vertebrae, unlike most living and extinct t...
Whole body regeneration from a blood vessel
...itive child knows, salamanders can regenerate lost limbs
or tails; and as lab investigators know, zebrafish can regrow lost fins. Of course, humans and other "higher" vertebrates must make do with repairing rather than regenerating damaged tissues. Though whole body generation (WBR) does occur, its typical...
First direct electric link between neurons and light-sensitive nanoparticle films created
...such things as new ways to connect with artificial limbs
and other prostheses, and revolutionary new tools for imaging, diagnosis and therapy. "The beauty of this achievement is that these materials can be remotely activated without having to use wires to connect them. All you have to do is deliver ligh...
Gene therapy shows promise as treatment for diseased limbs
...reatment method to explore in patients whose lower limbs
are at risk for amputation because of poor circula... alpha (HIF-1a) gene as the basis of treatment for limbs
damaged by compromised blood flow. Though the trial largely focused on the therapys safety, "the bot...
Gene found for rare disorder may reveal new pathway in mental retardation
...h, heart defects, feeding problems, deformed upper limbs
and distinctive facial features. In the current study, mutations in two genes of interest cause mental retardation, but with less pronounced facial features and none of the limb defects, such as missing hands or fingers, that are hallmarks of class...
'Electric' fish shed light on ways the brain directs movement
...al advances in humans, including better prosthetic limbs
and improved rehabilitative techniques for people suffering from strokes, cerebral palsy and other debilitating conditions. "All animals, including humans, must continually make adjustments as they walk, run, fly or swim through the environment. T...
Mutant gene shatters nerves
...If you bend a knee or an elbow, the nerves in your limbs
stretch but do not break. A University of Utah study suggests why: A gene produces a springy protein that keeps nerve cells flexible. When the gene was disabled in tiny nematode worms, their nerve cells literally broke. The discovery may provide a ...
Shoulder ligament a linchpin in the evolution of flight
...ay's fliers. "How animals got off the ground how limbs
became wings is a fascinating question," said team leader David Baier, a post-doctoral research fellow in the Department of Ecology and Evolutionary Biology at Brown. "What we learned here is that, in the evolutionary line to birds, a single ligamen...
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