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Tag: "flexible" at biology news

NC State scientist finds soft tissue in T. rex bones

...cimens preserved vessels, cell-like structures, or flexible matrix that resembled bone collagen from modern specimens. Current theories about fossil preservation hold that organic molecules should not preserve beyond 100,000 years. Schweitzer hopes that further research will reveal exactly what the soft stru...

Key mechanism in genetic inheritance during cell division identified

...otubule fibers are woven together to form a highly flexible cytoskeleton in biological cells that gives shape ...etween the ring and the microtubule is mediated by flexible domains, and is largely electrostatic in nature. This could allow for lateral sliding or diffusion o...

Love's all in the brain: fMRI study shows strong, lateralized reward, not sex, drive

...widespread regions of the caudate where there is a flexible combinatorial map representing and integrating many motivating stimuli. "This passion may be an excellent example of how a complex human behavioral state is processed. Moreover, taken together, our results and those of Andreas Bartels and Semir Zeki...

Canada approves marijuana-based pain spray

...pain relief. The spray formulation allows for more flexible dosing than an oral tablet, well suited to the var... designed for self-administration, this allows for flexible dosing and puts the patient in control of their pain,?said Dr. Gordon. “This is very important since...

Different microarray systems more alike than previously thought

...microarrays, and five labs used either of two more flexible systems. The Hopkins researchers noted that in the scientific literature some comparisons of different microarray systems found compatibility and some did not, and no study explored the possibility that a laboratory's methods of using a particular s...

Scripps scientists find potential for catastrophic shifts in Pacific ecosystems

...t strategies. Fisheries harvest targets need to be flexible and precautionary. This result strengthens the scientific basis for these polices." The new study is believed to be the first direct test for nonlinearity in large-scale physical and biological data for the marine environment. The basic methods for ...

Fox Chase study shows that weakened T-cell receptor signals change T-cell lineage

...tain immature immune cells will take, suggesting a flexible new model for commitment to one lineage or another. The first, most basic career choice made by precursors of the adaptive arm of the immune system is whether to adopt the B-cell or T-cell fate. Both originate from stem cells in the bone marrow, but...

Insects, viruses could hold key for better human teamwork in disasters

...nable the rapid assembly and deployment of ad hoc, flexible networks of responders who act largely on the basis of local information. Such a strategy would be enormously helpful in helping us cope with disasters such as the recent tsunami in the Indian Ocean." One of the ways these researchers hope to advanc...

Mutation in clams protects against paralytic shellfish poisoning but raises human health risk

...rotein. It was thought that the sodium channel was flexible at this location. We've shown that it is not, that it is rigid," says Connell. That could have implications for medical research, she notes, leading to new drugs for treatment of neuromuscular disease. Because clams that possess the mutation are mor...

Researchers find first evidence of venom system in extinct mammal

...r discovery shows that mammals have been much more flexible in the evolution of venom delivery systems than previously believed," said Fox, who works out of the Laboratory for Vertebrate Paleontology in the U of A Department of Biological Sciences. About the size of a mouse, the ancient mammal--Bisonalveus b...

To translate touch, the brain can quickly rearrange its sense of the body

...ternal map, and they shed light on the dynamic and flexible nature of the body map that is used to interpret each new perception. de Vignemont et al.: "Bodily illusions modulate tactile perception." Publishing in Current Biology, Vol. 15, pages 1286?290, July 26, 2005. DOI 10.1016/j.cub.2005.06.067 www.curre...

Harmless virus may hold key to more effective HIV drug discovery

...ants. The results suggest chemically simpler, more flexible compounds could better accommodate viral mutations. The research is part of a UCI program aimed at expanding the anti-HIV drug arsenal. The program includes National Academy of Sciences member Larry Overman in the Department of Chemistry, who toget...

A 'dimmer switch' for genes

...features that are not fixed in space, but that are flexible and changing." The team used a nuclear magnetic resonance, or NMR, which allows scientists to observe how the atoms of a molecule behave inside a magnetic field. The Graves team found that unstructured regions of the Ets-1 protein were affecting the...

Software 'agents' could help unmask reality of disease clusters

...dividual identities."Software agents could provide flexible but controlled access to unmodified confidential data, and return only results that do not expose any person-identifiable details," said Dr Boulos. "The use of software agents is not a simple as it sounds, and also carries with it its own security r...

Study provides insight into cellular defenses against genetic mutation

...nvert mRNA quality control from NMD over to a more flexible system that "overlooks" flaws, and provides more templates for building functional proteins. Genetic Decision Maker For two decades, researchers have made intuitive leaps in the understanding how NMD works with translation, the second phase of ...

Researchers learn how blood vessel cells cope with their pressure-packed job

...g that configuration. Rubber bands and most other flexible materials react to stretching by forming stress wrinkles parallel to the direction in which they are being pulled. However, the healthy bovine aorta endothelial cells did not behave that way in tests performed in the laboratory of Shu Chien, a coauth...

Zooming in on the protein-conducting channel

...tional analytical method called “normal mode-based flexible fitting?(NMFF) to model how well the two possible channel structures could explain the structural data from cryo-EM. The NMFF method was developed and applied by co-authors Florence Tama and Charles Brooks of the Scripps Research Institute. The techn...

Cord blood cells may widen treatment window for stroke

...en this less common type of stroke. "New and more flexible treatments are needed to help more patients," Dr. Willing said. "Cord blood treatment in rats is successful in alleviating, even eliminating, the disabling effects of both ischemic and hemorrhagic stroke. What's more, the treatment can be delivered m...

Image of myosin-actin interaction revealed in cover story of Molecular Cell

...tron cryo-microscopy made it possible to visualize flexible structural domains, which tether the Myosin V, helping to keep the protein on its actin track through the weak binding phase of the processive movement. The detailed molecular knowledge of how myosin interacts through the hydrolysis cycle with actin...

Johns Hopkins flu expert calls for mandatory vaccination of health care workers

...ll staff, easy access to flu shot clinics on site, flexible vaccination hours, emphasis on patient safety aspects of the program, education to counter beliefs that the shots can make you sick and encouragement from hospital leaders to get the vaccine. The next step, Perl says, is for health care professional...

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