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Tag: "arrived" at biology news

Genomic Analysis Uncovers New Targets for HIV Vaccine

...part of nine studies in Europe and Australia. They arrived at 486 patients who had had multiple blood tests documenting viral loads after infection and before they started receiving antiretroviral treatment. The three polymorphisms were identified after all the blood samples of the selected patients were sc...

Caribbean frogs started with a single, ancient voyage on a raft from South America

...n amphibians also arose from a single species that arrived by raft from South America. "This discovery is ...sing because no previous theories of how the frogs arrived had predicted a single origin for Caribbean terrestrial frogs and because groups of close relatives ...

Climate change was the cause of Neanderthal extinction in the Iberian Peninsula

...d to climate changes before the first Homo Sapiens arrived in the Iberian Peninsula. Cold, arid and highly variable climate was the least favourable weather for Neanderthals and 24,000 years ago they had to face the worst weather conditions in the last 250,000 years. The most important about these data is...

DNA repair proteins monitored at double-strand break

...e researchers could determine when repair proteins arrived at or around the DNA break and evaluate its repair—even when particular proteins shifted away from the break to make room for others. A report on this work appears in the May 7 online issue of "Nature Cell Biology." The findings are important b...

Remote sheep population resists genetic drift

...unted "trophies" in the 1960s, and then scientists arrived in the '70s and began collecting samples themselves. "The Haute Island mouflon have presented us with a rare opportunity," Coltman said. "There may be other natural populations that may have been studied in a controlled environment over the years,...

Stem cells act through multiple mechanisms to benefit mice with neurodegenerative disease

...ssion. These were a few of a number of conclusions arrived at by an international collaboration led by Evan Y. Snyder, M.D., Ph.D., and spearheaded by a member of his lab, Jean-Pyo Lee, Ph.D., of the Burnham Institute for Medical Research ("Burnham"). The study, to be published in Nature Medicine, will be ma...

Protein fragments sequenced in 68 million-year-old Tyrannosaurus rex

...to sequence. The bone extract, sent by Schweitzer, arrived in the form of a gritty brown powder that had to be rid of contaminants. Using techniques and tricks perfected while working on the mammoth sample, Asara purified the protein, identified as collagen, and, with the enzyme trypsin, broke it down into f...

Mummy's amazing American maize

...ulture of South America changed when the Europeans arrived in the 15th century ?everything from the language to the whole way of life," explained Professor Terry Brown, who headed the research in the Faculty of Life Sciences. "Maize is the staple food crop of the region but prior to colonisation it also h...

No-scalpel vasectomies by skilled surgeons may speed recovery

...f vasectomy to the traditional method. The studies arrived at conflicting results. The review appears in the current issue of The Cochrane Library, a publication of The Cochrane Collaboration, an international organization that evaluates research in all aspects of health care. Systematic reviews draw evi...

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

... prehistoric 7-foot-tall flightless "terror bird," arrived in North America from South America long before a ...o be 5 million years old. This shows that the bird arrived 2 million years before the land bridge formed, probably across islands that formed what today is the...

ASU researchers test antibacterial effects of healing clays

...ed Haydel to the project before the microbiologist arrived at ASU in 2005. Haydel brought more than 13 years of experience with pathogenic bacteria, in particular tuberculosis, to the project. Within two months of Haydel's arrival, they submitted the grant proposal to the NIH. "I approached this work from...

Living view in animals shows how cells decide to make proteins

...ntext shows only its current status and not how it arrived at that place." For instance, the splicing process can change even from day to day as an animal develops, he said, adding that extracting cells and watching them in a culture cannot convey all of these transient changes. Moreover, different cel...

Uncovering DNA's 'sweet' secret

...in a simmering, primordial stew. Just how nature arrived at this molecule and its sister molecule, RNA,remains one of the greatest - and potentially unsolvable - scientific mysteries. But Vanderbilt biochemist Martin Egli, Ph.D., isn't content to simplystudy these molecules as they are. He wants to know ...

'GreeneChip' -- New diagnostic tool that rapidly and accurately identifies multiple pathogens

... Chart review showed that the patient had recently arrived in Angola from a country where malaria was not endemic and that he had not taken malaria prophylaxis. Had the GreeneChip been available in the field to confirm the correct pathogen, the patient could have been treated for malaria. Differential dia...

Transmission of antibiotic-resistant bacteria linked to previous intensive care unit room occupants

...ures were obtained from all ICU patients when they arrived and every week they stayed to determine the presence of MRSA and VRE. Upon entering the ICU, 809 patients carried MRSA and 658 carried VRE, leaving 7,629 to screen for the acquisition of MRSA and 7,806 for acquisition of VRE. The average patient...

Living laboratory found on shoreline statues

...on Merseyside ?just as they were cleaned when they arrived in Crosby from their previous 'homes' across Europe. Dr Robinson added: "We will be sorry to see the statues go, but in a relatively short time we have been able to test some key ecological theories about the colonisations of communities on inte...

Virus has 'catastrophic' affect on red squirrels, research shows

... is passed to reds by grey squirrels, and probably arrived to Britain with some of the greys that were introduced from North America over 100 years ago. The virus does not appear to harm grey squirrels, but is fatal to reds when they become infected. Around 70 percent of greys in England have been exposed...

Seeing the serpent

... they are," Isbell said. In South America, monkeys arrived millions of years before venomous snakes, and show less specialization in their visual system compared with Old World monkeys and apes, which all have good vision, including color. Having evolved for one purpose, a good eye for color, detail and mo...

One in 14 men having a heart attack drive themselves to hospital

...at they felt they were going to collapse when they arrived in the casualty department. The average time it t...t happened to the same patients when they actually arrived at the Irish hospitals, found that women waited longer than men to be admitted and treated. "This m...

The diversity of marine life in the Gulf of Maine region is much greater than previously thought

...l Marine Sanctuaries. Some species are recently arrived as the result of human activities, such as shipping, and are unwelcome invaders that are altering local ecosystems. These include the European green crab, a small shore crab that is an efficient colonizer and predator. ...

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