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Tag: "fit" at biology news

'Computer-chemistry' yields new insight into a puzzle of cell division

...y lack of detailed understanding of how the Cdc25s fit with their associated kinases. "To me this is th...residues," must also orient in a tongue-and-groove fit at a few other special places, which the researchers dubbed 'hot spots," on the irregular molecular ...

UCLA scientists discover immune response to HIV differs, even in identical twins

... this action by changing shape so that it does not fit into those receptors. "These boys are as similar as two humans can be, yet we see differences in how they fight the virus," said Dr. Paul Krogstad, professor of pediatrics and pharmacology, and one of the researchers. "That's one more thing that ma...

Human trial proves ricin vaccine safe, induces neutralizing antibodies; further tests planned

...tely 500 micrograms of ricin, an amount that would fit on the head of a pin. The results from the UT Southwestern trial justify further development of the vaccine, Dr. Vitetta said. "We have shown that this vaccine is safe and immunogenic," said Dr. Vitetta. "Now we need to tinker with the dose and fo...

3D ultrasound device poised to advance minimally invasive surgery

...rays, the researchers engineered probes that could fit inside catheters threaded through blood vessels to... 12 millimeters in diameter ? the size required to fit into surgical instruments, called trocars, that surgeons use to allow easy exchange of laparoscopic ...

Rare Tibetan antelope listed as endangered

...rays, the researchers engineered probes that could fit inside catheters threaded through blood vessels to... 12 millimeters in diameter ? the size required to fit into surgical instruments, called trocars, that surgeons use to allow easy exchange of laparoscopic ...

Patterns in genome organization may partially explain how microbial cells work

... DNA is compressed, often more than 1,000-fold, to fit within the confines of the cell. "In some cases, it might suggest that a genome is arranged into relatively large physically distinct coils inside the cell, but nobody knows for certain," Allen said. "One of the take-home messages of our study is tha...

Rice bioengineers pioneer techniques for knee repair

...roken samples were tailored three-dimensionally to fit a specific rabbit femur. "If you told me 10 years ago that we would be making entire articular end caps via self assembly I would have said you were crazy," said Athanasiou. "The fact that we can do this is an indication of how far the discipline of...

First wolverine radio-collared in Pacific Northwest

...in Missoula, Mont., rushed to the Methow Valley to fit the young female wolverine with a satellite radio collar to initiate the first scientific study of wolverines ever conducted in the Pacific Northwest. Other members of the interagency team, including wildlife biologists John Rohrer of the Okanogan-...

MIT: Oceans are a major gene swap-meet for plankton

...ng in relative abundance, depending on who is most fit under ever-changing circumstances. But how do they do it? "We decided to let the cells tell us what is most important to them" by doing a systematic survey of relative abundances among six different types, or clades, of Prochlorococcus across vast ...

Next good dinosaur news likely to come from small packages

...us about diseases, about where prehistoric animals fit in the food chain, what they ate and who they are related to." Ostrom joins six other scientists engaged in various versions of CSI: Jurassic Park. The symposium, "New Approaches to Paleontological Investigation," at the American Association for the...

Study in Science holds promise for a new approach to drug therapy

...es of "drug-like molecules" to identify those that fit into, and bound tightly to, specific parts of the hotspot. These "drug-like" molecules could then be used to make precision changes in the hotspot's behavior. Any new drug would need to be able to block certain functions of the hotspot, while leaving...

Wisconsin scientists find a way to make human collagen in the lab

...e to modify the ends of the snippets so they could fit together and stick to form long collagen fibers. "Now we can make synthetic collagen that's longer than natural collagen," says Raines, who previously authored a paper in the journal Nature that demonstrated how to make synthetic collagen that is st...

Team discovers possible 'universal strategy' to combat addiction

... designed a molecule called a peptide, tailored to fit the serotonin receptors and block PTEN. When rats were treated with this PTEN-blocker, it shut down the drug reward process ?including the process that induces craving and withdrawal. The study, funded by the Canadian Institutes of Health Research a...

Animal brains 'hard-wired' to recognize predator's foot movements, Queen's study suggests

...ngly irrational phobias towards animals that don't fit the ballistic movement pattern of a proposed 'life detector'," he says. "Snakes, insects and spiders, or birds can generate pathological reactions not observed in response to 'normal' animals." ...

USC, Rice to develop bacteria-powered fuel cells

...owered fuel cells that could power spy drones that fit in the palm of a hand. The Air Force has long been interested in micro-scale air vehicles ?some as small as insects ?but it has been stymied by the lack of a suitable, compact power source. With $4.4 million from the Department of Defense's Multidis...

Researchers unravel DNA tangles and enzyme seamstresses

Almost three metres of tightly-coiled DNA strands fit into a cell's nucleus. As DNA replicates, the strands unwind and unfold and then re-package into chromosomes, the genetic blueprints of life ?but what happens if this process becomes entangled? Untangling the heaps of DNA strings during cell divisio...

Lack of basic research putting patients at risk

...medical academia, in its current form, is properly fit for purpose. He believes that medical academia must improve its performance or, less preferably, be forced by politicians to prioritise appropriately. The recent emphasis on the development of clinical research is welcome, he says, but there are pot...

Alzheimer's found to be mostly genetic

...er's in at least one twin. In the model that best fit the data, genetic influence accounted for 79 percent of Alzheimer's risk, with 95percent confidence in a range of 67 to 88 percent. The other 21 percent of Alzheimer's risk was due to non-shared environmental causes. Risk from shared environments, s...

Evolution follows few of the possible paths to antibiotic resistance

...because they create intermediates that are no more fit than the original gene, and of the remaining 18 Weinreich and colleagues observed that only about half actually had a significant probability of evolutionary occurrence. "To be followed by an evolving population, natural selection requires that anti...

Drug-resistant bacteria patterns in intensive care units changing nationally

...like traditional MRSA the community strain is very fit - it causes infection in healthy people," said CDC epidemiologist Dr. Monina Klevens. "When it is introduced into a hospital, where ill patients are more vulnerable to infection, it has the potential to cause significant morbidity and mortality." Du...

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