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Tag: "bones" at biology news

'Trojan Horse' agent halts bone metastasis in mice

...t the growth of human prostate cancer cells in the bones of mice, investigators say it likely could help prevent the growth of other cancers in bones such as breast, multiple myeloma, lung and renal cell. "Many tumors invade bone in the same way, ...

Tiny bones rewrite textbooks

...once home to mammals as well. The tiny fossilised bones - part of a jaw and a leg - belonged to a unique, mouse-sized land animal unlike any other mammal known. They were unearthed from the rich St Bathans fossil bed, in the Central Otago region of South Island. But the real shock to scientists was that...

New dwarf buffalo discovered by chance in the Philippines

...lives in Chicago, recognized the importance of the bones and donated them to The Field Museum. If not for the attention and foresight of these two individuals, science might never have documented what has turned out to be an extremely unusual species of dwarf water buffalo, now extinct. The new species,...

West Australian fossil find rewrites land mammal evolution

...th a well-formed humerus, ulna and radius the same bones are found in the human arm. "This new fossil proves that features of land-living tetrapods (four-legged vertebrates) evolved much earlier in their evolutionary history than previously thought," Mr Fitzgerald, a researcher in the School of Geoscien...

Researchers discover new gene responsible for brittle bone disease

...teogenesis imperfecta (OI), a condition that makes bones much more likely to break, according to a study published today in the journal Cell. Victims may experience just a few fractures in a lifetime or several hundred beginning before birth. The number of Americans affected is unknown, but estimates ra...

Tuberculosis: The bacillus takes refuge in adipose cells

...lop some form of tuberculosis attacking the lungs, bones or genitals. It also suggests that isoniazid treatment, prescribed to the close friends and family of patients as a preventative measure, may in some cases not provide sufficient protection against the disease. This is particularly important for immu...

New evidence of early horse domestication

...stication, unlike dogs or cattle. So ancient horse bones don't easily reveal the secrets of domestication. With research funding from the National Science Foundation, Olsen's team took a different tack. They looked for circumstantial evidence that people were keeping horses. One approach was to survey th...

Trotting with emus to walk with dinosaurs

... Jurassic. "We don't have any documented dinosaur bones and teeth from that period in North America, except for some very scrappy material from Mexico," said Brent Breithaupt, curator and director of the University of Wyoming's Geological Museum in Laramie, Wyo. That makes it very hard to connect the trac...

Eminent inventor of DNA fingerprinting gains new recognition

... of a crime? Who is this tsunami victim? Are these bones truly the remains of the last Czar of Russia? Jeffreys' technique was even able to tell us whether Dolly was in fact the clone of another sheep. "The new discipline of forensic molecular biology is therefore a direct outcome of Jeffreys' research, b...

Orange, grapefruit juice for breakfast builds bones in rats

...g considered an unavoidable aging disease in which bones become more likely to break, according to a study ...sity. He said the team will now examine the rats' bones at the cellular level "to see what caused that improvement in the bone." "A reduction in bone densi...

One therapeutic dose of radiation causes 30 percent spongy bone loss in mice

...gical Society. Bateman's team received the mouse bones from the Loma Linda group, which had used the mice to examine the effects of radiation on the immune system. ...

Tyrannosaur survivorship -- tough times for teens

...ck, animals. The almost complete lack of herbivore bones from the excavation suggests that this was probabl...ive at age 13, which would help explain why so few bones of young adults have been found. "One implication of these findings is that the previously mysteriou...

Ultra low-dose estrogen shown safe for post-menopausal women

...or two years," says Yaffe. "It would benefit their bones and might have a beneficial effect in terms of hot flashes." A related study of the same group of women showed a significant increase in bone density, without adverse health effects, in the women who took estradiol compared to the women who took pl...

How ancient whales lost their legs, got sleek and conquered the oceans

... kept the same number and arrangement of hind limb bones as their terrestrial ancestors." In findings to be published this week in the Proceedings of the National Academy of Sciences, scientists say the gradual shrinkage of the whales' hind limbs over 15 million years was the result of slowly accumulated ...

UCLA scientists strengthen case for life more than 3.8 billion years ago

...alled apatite, which is also the material of which bones and teeth are made. The form of life the researchers believe they have discovered was probably a simple microorganism, although its actual shape or nature cannot be ascertained, Mojzsis said, because heat and pressure over time have destroyed any o...

Bones hold the key to blood renewal

...hough we think of them as solid and permanent, our bones are actually constantly being rebuilt throughout o...now revealed how cells that work at remodeling the bones play a direct part in the ongoing renewal of another system ?the blood. Their findings, which may le...

U of M study examines kidney stone prevention in astronauts

... while in space. Astronauts lose calcium in their bones and strength in their muscles while in space because of the zero-gravity environment. This calcium can end up in their kidneys, putting them at risk for developing kidney stones. At least 14 American crew members have developed kidney stones in the...

Life, the remake

..., such as photosynthesis, plant seeds, mineralized bones and even human language are just such good ideas that they would reappear, although at different times and in somewhat different forms. Barnacles, for example, "desperately want to be mollusks," Vermeij said, although they are actually crustaceans r...

Evolution of 'irreducible complexity' explained

...0 million years ago, before the first animals with bones appeared on Earth ?and characterized its molecular functions. The experiments showed that the receptor had the capacity to be activated by aldosterone long before the hormone actually evolved. Thornton's group then showed that the ancestral recep...

Ancient fossil DNA found preserved in crystal

...f crystal clusters in fresh bones. Even when these bones are ground up and treated with sodium hypochlorite... returned to these findings, reasoning that fossil bones might possess such crystal structures containing preserved ancient DNA. After treating two modern ...

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