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Tag: "bones" at biology news

Biotechnology's newest chemical tool

...o the proximal, medial and distal phalanges, those bones between your finger knuckles, are all driven by the same tendon. This approach is called underactuation as there are more Degrees of Freedom than Degrees of Movement (motors); it means the prosthesis has a self-adaptive grasp. "This is a fundamenta...

Oldest dated evidence of cattle in southern Africa found

.... The discovery of the 2000 year old cow and sheep bones are important because of the long held view that the Kalahari was a comparatively isolated area that was primarily occupied by foraging peoples until recently. The findings, to be published in the August/October issue of Current Anthropology, are al...

Bone marrow stem cells may heal hearts even years after heart attacks

...The researchers harvested bone marrow from the hip bones of the patients, so there was no threat of transplant rejection. After processing, stem cells from the marrow were infused through a catheter into the coronary artery where the patient's heart attack occurred. "The main results were at least threefo...

DNA traces evolution of extinct sabertooths and the American cheetah-like cat

...comparing ancient DNA extracted from the preserved bones of the two sabertooths (a Smilodon specimen from Patagonia and a Homotherium specimen from the Yukon region) and the American cheetah-like cat (a Miracinonyx specimen from the state of Wyoming) with DNA from modern felid (cat-family) and carnivore sp...

Nanotubes inspire new technique for healing broken bones

...implanted material. Grafts provide a framework for bones to regenerate and heal, allowing bone cells to weave into the porous structure of the implant, which supports the new tissue as it grows to connect fractured bone segments. The new technique may someday give doctors the ability to inject a solution ...

Ancient DNA confirms single origin of Malagasy primates

...al Academy of Sciences. Radiocarbon dating of the bones and teeth from which the DNA was obtained reveal that each of the individuals analyzed died well over 1,000 years ago, according to the senior author, Anne Yoder, associate professor in the Department of Ecology and Evolutionary Biology. Living lemu...

Virginia Tech, Nanjing Institute researchers discover half-billion year-old fossils

...40 million years ago ?when animals with shells and bones began to become plentiful. But evidence of complex life older than 540 million years is scant and difficult to study. Now, a research team from Virginia Tech in the United States and Nanjing Institute of Geology and Paleontology in China has discove...

Study: Predatory dinosaurs had bird-like pulmonary system

...Washington, D.C., Berlin and London to examine the bones of ancient beasts, and also studied a 67-million-y...movement of researchers who are examining dinosaur bones and comparing them with modern animals to learn more about the anatomy of these extinct beasts. ...

Elderly mice yield clues to the process of growing old

...d vision impairment, loss of muscle mass, weakened bones and fewer circulating red blood cells. Mitochondria are structures within cells that provide energy for cells to move, divide, contract and secrete products vital for the health of organisms. "We think that the key to what is happening in aging is t...

Beauty queens urge girls not to sacrifice their bones

...ize that modern ideas of "beauty" can damage their bones and lead to osteoporosis later in life. The women...ition in bone health". Osteoporosis, in which the bones become fragile and break easily, is one of the world's most devastating and common chronic diseases....

Fundamental discovery -- Bone fracture

... about bone, describing why elephants need thicker bones than small animals." He said that a paper on bone is published every six minutes. And although bone is extensively studied, little is known about how it works at the molecular level. "Our paper is the beginning research on this." Hansma and his coll...

Researchers track down cause of a disfiguring bone disorder

...deafness and blindness. Collarbones, ribs and long bones can also be affected. The research team, led by Gabriela Loots of Livermore's Genome Biology Division, reports its findings today in the online version of the journal Genome Research. Noncoding DNA segments ?long stretches of DNA that do not code f...

Scientists discover stem cell origin of neck and shoulders

... of homogeneous groups of stem cells making up the bones of the shoulder and neck and another making the mu...ng it." As the joining points between muscles and bones have survived unaltered across hundreds of millions of year researchers can also start to map cell t...

Neandertal femur suggests competition with hyenas and a shift in landscape use

...f the same animals as the hyenas, with some animal bones showing both cut marks from human tools and tooth marks from hyenas. Additionally, the human femur was gnawed by carnivores, probably hyenas. This shows that close competition for food and space persisted through the Middle Paleolithic among these Ne...

Unusual antibiotics show promise against deadly 'superbugs'

...ponge-like scaffold upon which cells build nerves, bones and skin. Because it is non-toxic, dissolves naturally over time and rarely triggers rejection, collagen is commonly used in cosmetics, drug delivery systems and biocompatible coatings. Yu's goal is to change some of collagen's biochemical or mecha...

Modified collagen could yield important medical applications

...ponge-like scaffold upon which cells build nerves, bones and skin. Because it is non-toxic, dissolves naturally over time and rarely triggers rejection, collagen is commonly used in cosmetics, drug delivery systems and biocompatible coatings. Yu's goal is to change some of collagen's biochemical or mecha...

New method shows it is possible to grow bone for grafts within a patient's body

...tions. Working with mature rabbits, a species with bones that are very similar to those of humans, the rese...integrates really well at a recipient site." Long bones in the body are covered by a thin outer layer called the periosteum. The layer is a little like scot...

Agilent Technologies introduces high-capacity human protein removal system for proteomics research

...wingly, Hunt, Padian and Camp had also found other bones of Revueltosaurus, but because these remains were ...r Holbrook, since John Muir first picked up fossil bones and teeth while passing through in 1906 and deposited them with the University of California. Parke...

Revueltosaurus skeleton unearthed at Petrified Forest upsets dinosaur tale

...wingly, Hunt, Padian and Camp had also found other bones of Revueltosaurus, but because these remains were ...r Holbrook, since John Muir first picked up fossil bones and teeth while passing through in 1906 and deposited them with the University of California. Parke...

Scientists use manufacturing methods to reconstruct mastodon

Combining 13,000-year-old bones with 21st century auto manufacturing techniques, s...preparators used a variety of techniques—borrowing bones from another specimen of the same species, size and stage of development, for instance, or manually ...

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