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Tag: "bones" at biology news

CT scan reveals ancient long-necked gliding reptile

... foot and ribs are clearly visible The fossilized bones of a previously unknown, 220 million-year-old long... silty mudstone, and only faint impressions of the bones can be seen at the surface. Repeated attempts to remove the matrix using both mechanical and chemica...

Ice Age extinction claimed highly carnivorous Alaskan wolves

...s extracted mitochondrial DNA from the fossil wolf bones preserved in permafrost and compared the sequences...enging,” Leonard said. Chemical analyses of the bones back up this conclusion. Carbon and nitrogen isotope values of the Alaskan wolf bones are intermedia...

From the deep -- Researchers find new species of sea anemone

... The anemones that Daly received once lived on the bones of a dead whale some 1.8 miles (3,000 meters) belo...flesh of a dead whale decomposes within weeks, the bones can last anywhere from 60 to 100 years. "As that happens, the bacteria that break down the bones ...

Fused nasal bones helped tyrannosaurids dismember prey

...zoological superweapon." "Fused, arch-like nasal bones are a unique feature of tyrannosaurids," said Dr. ...s from breaking their own skull while breaking the bones of their prey." Snively and co-authors, number-crunching physicist Donald Henderson from the Roya...

Bones in motion: Brown scientists to create new 3-D X-ray system

...e inside living humans and animals and watch their bones move in 3-D as they run, fly, jump, swim and slith...rchers trying to understand the complex motions of bones and joints are held back by technology. Computed tomography, or CT, delivers detailed 3-D images, bu...

NIH researchers discover protein that appears to regulate bone mass loss, the cause of osteoporosis

... by a severe loss of bone mineral density, fragile bones and an increased risk of hip, spine and wrist fractures. The basic mechanism behind osteoporosis involves an imbalance between bone mineral formation and loss, but the detailed biological processes that lead to this imbalance are not completely under...

Eating with our eyes: Why people eat less at unbused tables

...ready eaten -- in this case, leftover chicken-wing bones -- ate 27 percent less than people who had no such...o groups -- those eating at a table where leftover bones accumulated compared with those whose leftovers were removed -- was greater for men than for women. ...

Researcher to study astronaut bone loss for space biology agency

...take months to return to normal. During that time, bones are highly vulnerable to fracture. Here on Eart...ing this interaction, and the role it plays in how bones respond to mechanical forces, will allow interventions to protect the bones of astronauts," Long say...

Ancient amphibians evolved a bite before migrating to dry land

...The shapes of the junctions between adjacent skull bones -- termed "sutures" -- in the tops of these fish a... result in a faint pushing together of the frontal bones in the skull, while a sucking motion would pull those bones ever so slightly apart. By comparing the...

Cartilage discovery offers arthritis hope

...oth, hard cartilage tissue that covers the ends of bones allowing them to glide over one another at the joi...rers experience severe pain as the two ends of the bones rub against each other." The team's findings ?published in the journal Proceedings of the National...

Paleontologists discover new mammal from Mesozoic Era

...drum (tympanic membrane). The mammal middle ear bones evolved from the bones of the jaw hinge in their reptilian relatives. However, paleontologists long have attempted to under...

Update on census of world's most endangered cat -- Female Amur leopard found dead

...The bullet came through tail bone, crushed the hip bones and lodged in the belly. She was then beaten to death with a heavy object. “The killing of even one female is a huge loss for a cat on the brink of extinction,?said Darron Collins, managing director of the Amur-Heilong Program, World Wildlife Fun...

'Terror bird' arrived in North America before land bridge, study finds

...ts extinction." When an animal dies, its porous bones absorb groundwater as they fossilize. As the local... "It is very difficult to assess the age of fossil bones directly as they are too old to be carbon dated," Trueman wrote in an e-mail. "Bones can also be mov...

Ring-around-the-cell

Breaking down bone is a tough job. Yet, our bones undergo remodeling every day of our lives, as old material is cleared away so that new bone can form. In diseases such as osteoporosis, an imbalance in this process is responsible for the characteristic bone loss. New research at the Weizmann Institu...

Reversing cancer cells to normal cells

... those in humans, such as heart, kidney, pancreas, bones and cartilage.) Using the zebrafish model, and the extraordinary technologic advances made in microscopy and molecular biology in recent years, the team was able to show that the aggressive melanoma cells secrete Nodal, a critical component unde...

Vitamin D deficiency widespread during pregnancy

...ted with rickets ?a disorder characterized by soft bones and thought to have been eradicated in the United States more than 50 years ago ?as well as increased risk for type 1 diabetes, asthma and schizophrenia. "A newborn's vitamin D stores are completely reliant on vitamin D from the mother," observed ...

Molecular 'marker' on stem cells aids research, perhaps therapies

...for reconstruction or augmentation, or to shore up bones left fragile by age or disease. “With a purer cell population, you should have a more effective therapy,?Dr. Perlingeiro said. The SSEA-4 molecule was known to be on the surface of embryonic stem cells, as well as on embryonic carcinoma cells, t...

Smashing the time it takes to repair our bones

...he said. Dr Hannay said that unfortunately when bones fractured or broke, especially in older people, the healing process could stall. "We find bones can get half way through the healing process but won't heal properly and with an aging population th...

Bones at the nanoscale

...ormability of bones. The hierarchical structure of bones makes them able to sustain large strains without b...rstand how a molecular level change can make whole bones more prone to frac-ture in diseases like osteoporosis", explains Himadri Gupta, first author of the ...

Ancient ape ruled out of man's ancestral line

...fontein by a local South African team in 1997. Its bones preserved in sediment layers, it is the most compl...r explained: “In many of these finds, the smallest bones have disintegrated, but here the feet and hands are well preserved - and these could enable research...

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