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Tag: "was" at biology news

Ancient DNA traces the woolly mammoth's disappearance

... extinct woolly mammoth. What they found, however, was an “interesting pattern, not like those of the other species.” Their genetic data indicate that Siberian mammoths expanded from a small base some time before sixty thousand years ago. Moreover, they found two distinct genetic groups, implying that...

New study finds genetically engineered crops could play a role in sustainable agriculture

...ted for its insecticidal properties. The research was conducted by scientists at the National Center for Ecological Analysis and Synthesis (NCEAS) at the University of California, Santa Barbara, The Nature Conservancy, and Santa Clara University. The study is accompanied by a searchable global database ...

Brightening prospects of using fluorescent nanotubes in medical applications

...y five to ten times. The fact that the improvement was considerably larger – 20 to 100 times – came as a pleasant surprise. “Quantum efficiency is critical, but there are several other factors that make nanotubes particularly well suited for use in living systems,” says Hertel. These factors include: ...

Research shows cord blood comparable to matched bone marrow

... mismatched. The main objective of the research was to compare the results after cord blood and marrow...e survival rates, providing the degree of mismatch was limited and the number of cord blood cells available was sufficient. Furthermore, study participant...

Sun exposure early in life linked to specific skin cancer gene mutation

...mutations. A different mutation, on the NRAS gene, was found in patients who had sun exposure later in li...ces they had lived. Each patient's UV sun exposure was estimated from their residential history and satellite-base measurements. DNA from the patients' mel...

Stroke study sheds light on left-right brain divide

...participants made mistakes during the task, but it was those with right-brain damage who most frequently failed to spot their errors and had difficulty keep track of the changing task rules. The group with damage to the left frontal lobes corrected 68% of mistakes in the test, whereas people with right-b...

Breakthrough developments in rheumatoid arthritis reported

... in the 1980s, Dr. Gregersen discovered that there was a shared bit of DNA that traveled in the disease. What took two years to identify in the laboratory – shared bands of genetic material – would take two days today. And that speed is what excites Dr. Gregersen. “We have the tools to get at these genes...

Rising skin cancer rates are more likely to affect wealthy people, says 12-year review

... a decrease in men aged 75 and over. “And there was a link between more patients living in wealthier a...which averages 186 cases a year. Being well-off was a disadvantage when it came to skin cancer. Women living in affluent areas were 29 per cent more ...

'Lucky 13' as new gene discovery offers further hope for childhood blindness

... very proud to have supported it." The research was also welcomed by Professor John Marshall, Chairman of the Medical Advisory Board at the British Retinitis Pigmentosa Society. "This dramatic discovery provides further information enabling us to combat blindness within the Retinitis Pigmentosa gro...

U-M researchers discover gene switched off in cancer can be turned on

... found no mutations to the gene but rather that it was just silent – essentially like a switch that had b...C inhibitors did return BRM expression, the effect was short-lived. Once the drugs were taken away, BRM expression decreased. “The HDAC inhibitors are n...

Migration alert -- How tumor cells home in on the lymphatic system

...asis, says Swartz. “It implies that if a lymphatic was blocked, tumor cells would be less attracted to it. This means that tumor cells “know” which lymphatic vessels will be more effective routes for dissemination,” she explains. “Therapeutically, it indicates that a drug target for lymph node metastase...

Undergraduate research shows leaderless honeybee organizing

...ofessor Stanley Schneider, Pierce’s mentor. Pierce was first author on the paper – a rare achievement for an undergraduate. “It was a very good work and an impressive achievement for a student researcher – he got a publication as an...

Newly discovered antibody may be body's natural defense against Alzheimer's

...he same proteins. The existence of such antibodies was predicted by animal studies, but they were never p... IVIG is made from the blood of healthy donors and was previously reported to contain small quantities of antibodies against beta amyloid. "The effects...

Researchers shed light on mechanism of action used by anti-cancer drug

...he most common form of kidney cancer in adults. It was originally developed as an inhibitor of the oncoge... that in human leukemia cells, sorafenib lethality was less a consequence of Raf inhibition, but rather reflected interference with the synthesis of Mcl-1....

Physicist cracks women's random but always lucky choice of X chromosome

...clear scientific reason as to why one X chromosome was switched off rather than the other. The observations also seem to run counter to the usual idea that the biological mechanisms evolve in ways that allow a "best" choice to be made between things rather than a random one. Now researchers led by Uni...

Massive herds of animals found to still exist in Southern Sudan

...Mongalla gazelle in Southern Sudan, where wildlife was thought to have vanished as a result of decades-lo... rival those of the Serengeti. The survey project was conducted by J. Michael Fay, a conservationist with the Wildlife Conservation Society (WCS) and a Na...

Study shows lizard moms dress their children for success

...n in yellow-throated offspring. The barred pattern was not induced in non-yellow progeny. In the other pathway, the extra hormone was prompted by an abundance of orange-throated lizards in the female's social environment. In orange-th...

Australian wins prestigious prize in biodiversity informatics

...he Prize in honor of Dr. Ebbe Schmidt Nielsen, who was an inspirational leader in the fields of biosystem...ng and novel way. Speaking about the Prize when he was notified, Flemons said "I am honoured by the award. GBIF is making a significant contribution to bi...

CT scan reveals ancient long-necked gliding reptile

...achelos apeoros meaning "soaring, long-necked" and was found at the Solite Quarry that straddles the Virg...p the sheet of rock in which the fossilized glider was embedded, they gave up total resolution of all of the bones. Because this fossil has been identif...

Genetic factors are linked to fever following smallpox vaccination

... IL-1 gene complex, and especially the IL-1A gene, was the site most significantly associated with different risks of fever. “Vaccines are the safest and most effective way to prevent a number of very important childhood and adult diseases,” Dr. Stanley remarked. “Our work is designed to identify w...

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