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Tag: "tip" at biology news

Engineers improve plastic's potential for use in implants by linking it to biological material

...yrrole. They attached copies of the peptide to the tip of an atomic force microscope at the university's ...or Nano- and Molecular Science and Technology. The tip of this specialized microscope is normally passed across the surface of a material to "map" its peak...

Stanford gut check shows diversity of intestinal ecosystem

... we are not completely there yet. This is just the tip of the iceberg." Eckburg works with David Relman, MD, associate professor of medicine (infectious diseases and geographic medicine) and of microbiology and immunology. Relman's lab at the Veteran Affairs Palo Alto Heath Care System specializes in mi...

At long last, scientists figure out how plants grow

...auxins are produced in shoot tips, lopping off the tip can cause numerous side shoots to appear, giving a plant a denser, more sculpted look. Auxin also promotes fruit development. In strawberries, for example, auxin produced by the developing seeds promotes the growth of a red and juicy fruit. Another...

Scientists journey to southern Africa to unravel the secret world of elephant communication

... Billy Idol has placed his flat on the ground, the tip pointing inward toward his front feet. Billy and t...ing, feeding and scratching. It turns out that the tip of the trunk contains two kinds pressure-sensitive nerve endings--Meissner's corpuscles that detect ...

Brain-mapping technique aids understanding of sleep, wakefulness

...said the trigger that causes the sleep "seesaw" to tip from one side to the other and maintain a proper balance between time spent awake and time spent asleep is still a big mystery in brain science. By shedding light on the network of neural connections involved in sleep, he said, his and other studies ...

Duke Chemists Isolating Individual Molecules Of Toxic Protein In Alzheimer's, Parkinson's Disease

... by Boris Akhremitchev are using the infinitesimal tip of a customized atomic force microscope (AFM) to c.... Atomic force microscopes use a sharp microscopic tip to image surfaces and detect energy differences by mechanically probing molecular surfaces. In a po...

Open microfluidic and nanofluidic systems

... quickly and can then be scanned directly with the tip of an atomic force microsope. However, the same morphology diagram should also apply to other liquids and other substrate materials. It should also remain valid if one further shrinks the surface channels and, in this way, moves deeper into the nanor...

Neuronal 'traffic jam' marks early Alzheimer's disease

...n others, enough to cross a critical threshold and tip the scale toward disease." Goldstein emphasized that any application of these findings to potential diagnostic tests or new therapies remains speculative at this time. "However, if tracers could be developed that would reflect transport function, th...

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