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Tag: "quite" at biology news

Woods Hole Research Center plans controlled burn in Amazon rainforest

...the first round of burning last year, the fire was quite low, creeping along the ground burning leaves and ...ust how resilient some of these species are. It is quite clear, however, that the composition of the forest will be altered following a fire, and researchers...

Study casts doubt on 'Snowball Earth' theory

...she said, "finding the one anomalous spot would be quite unlikely," adding that the drill core came from an extensive formation of rocks with similar characteristics. "At what point does an enormous refugium become open ocean?" she asked. Skeptics also may argue that the rocks do not necessarily date to ...

Researchers devise new technique for creating human stem cells

...ate than the embryonic in the hybrid cells. It was quite clear that when we looked at these hybrid cells, they had completely reverted to an embryonic state." Melton said that the remaining technical hurdle is figuring out a way to eliminate the embryonic stem cell nucleus in the hybrid cell, causing it t...

Engineered molecule amplifies body's immune response

...d Molecular Biology journal. "Our paper is really quite simple in conceptual terms," says Dr. Holtzman. "It is well known that interferon provides a benefit to people by protecting them against infectious diseases and cancer. Unfortunately, administration of interferon is costly and short-lived and has si...

Lance Armstrong through a physiological lens: hard training boosts muscle power 8%

...nges in his efficiency over seven years are really quite amazing. We wouldn't be surprised if some major physiological changes happened, but here's a real quantified example." He added: "Generally there are two ways to improve efficiency: Train your maximum capacity to be very high, or train your sub-maxi...

Hybrid grass may prove to be valuable fuel source

...ome of the other fertile Miscanthus species can be quite invasive," she said. At a research station near Hornum, Denmark, giant Miscanthus has been grown for 22 years in Europe's longest-running experimental field. The crop has never been invasive and rhizome spread has been no more than 1.5 meters (4.92 ...

Tagging pathogens with synthetic DNA 'barcodes'

...e DNA is flexible, the short strands used here are quite rigid," Luo said. "A long piece of spaghetti is floppy, but a short bit of it is quite stiff." An antibody or some other molecule that will bind to the molecule to be detected is attache...

US Army plans to bulk-buy anthrax

...nits, one could also grow theAmes strain, which is quite lethal." The US renounced biological weapons in 1969, but small quantities of lethal anthrax were still being produced at Dugway as recently as 1998. It is not known what use the biological agents will be put to. They could be used to test procedure...

Discovery of T-cell 'traffic control' boosts new drug promise

... "But early studies by a number of researchers are quite promising." Progress will also come from finding "uniquely effective combinations of these agents with other immunosuppressive drugs," he says. In animal studies and clinical research with patients over more than a decade, scientists have come to u...

Mechanism regulating tooth shape formulation found

...n or BMP). Whereas teeth producing ectodin develop quite normally with excess BMP, teeth without ectodin had a markedly accelerated induction of cusps. Indeed the researchers were able to induce cusps and mineralization of teeth much faster than happens in normal mouse teeth, suggesting that tinkering with...

Once given 'no respect,' cells' tiny RNAS take driver's seat

...-studied protein called Myc. Our discovery fits in quite well with the two other labs' studies on the invol...genes that increase cell growth, the pair could be quite dangerous if they simply fed off each other." But the researchers also discovered that two of the s...

Unweaving amyloid fibers to solve prion puzzles

...hem into integrated circuits. "These findings are quite relevant for the material sciences," says Lindquist. "The more we understand about how these fibers work, the more we can get them to self-assemble," a key advantage for nanoscale devices that are very difficult to manipulate directly. In addition, a...

Muscle repair: Making a good system better, faster; implications for aging, disease

...n at the University of Michigan. The study showed quite striking differences in how normal (wild type, or WT), PAI-1 deficient (null) and uPA null mice recovered from muscle injury. Five days after an injury, PAI-1 null mice had recouped nearly 40% of pre-injury muscle force, significantly greater than WT...

Genetics links whale to two different ocean basins

...ean to another has always been a possibility, it's quite difficult to track in the wild," said WCS researcher Dr. Cristina Pomilla, lead author of the study. "This study demonstrates the ability of molecular technologies to confirm the movements of an individual whale between ocean basins." The study exam...

'Underground' tunnels discovered as means for communication between immune system cells

...nd that this intricate physical network exists but quite astonishing to learn that immune system cells are ...rchers say the tunneling nanotubules are something quite different. "This is clearly a third form of intercellular communication, distinct from gap junction...

No small feat: First ever gene therapy success for muscular dystrophy achieved

...ffective treatments exist and children usually die quite young. Despite gene therapy being among the most vigorously studied approaches for muscular dystrophy, it has been beset with uniquely difficult hurdles. The genes to replace those that are defective in CMD are larger than most, so it has not been p...

Tadpole soon to help in the fight against cancer and lymphedema

...uch until now and is therefore as good as unknown, quite amazing seeing its importance for our health. One of the reasons for this lack of study is the fact that there was not a good model system until now. Lymphatic vessels can be studied in mice but this takes time and is extremely complex. Moreover, a s...

Genomics researchers discover protein deficit that causes drug toxicity

...w kind of mechanism to study to explain this. It's quite different from what we were thinking even a few years ago," says Liewei Wang, M.D., Ph.D., lead Mayo researcher in the study. "People are still debating what its function really is, but it appears to play a role here by receiving misfolded proteins."...

DNA from feathers tells tale of eagle fidelity

...tists to confirm that eagles from central Asia are quite possibly the most faithful of birds. By performing DNA analysis on the feathers left behind at nesting sites, the researchers were able to identify individual Eastern imperial eagles in a nature reserve in Kazakhstan. Their analysis showed that not ...

A radical solution for environmental pollution

...oluene is a by-product of oil refining, so there's quite a lot of environmental contamination with this and related hydrocarbons, from refineries or chemical plants," Marsh said. "Because of their molecular structure, these compounds are very difficult to degrade, which is why they're pollution hazards." T...

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