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Tag: "tip" at biology news

In nature, proteins sweep up nanoparticles

Here’s a pollution-control tip from nature: Deep inside a flooded mine in Wisconsin, scientists from several institutions including the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) have discovered a world in which bacteria emit proteins that swe...

Researchers demonstrate way to control tree height

...essful modification with poplar could be just “the tip of the iceberg,” the researchers said in their report. Dwarf trees and crop plants created with traditional cross-breeding or horticultural techniques are already widely used in fruit trees, the ornamental tree industry and agriculture. The adv...

3-D ultrasound scanner provides in-depth view of the brain

...it can produce an image of the brain with just the tip inserted through the skull. The researchers demonstrated that the brain scanner can successfully image the brain of a dog. Guided by the device, team member Srinivasan Mukundan of Duke Medical Center directed a needle into a particular region of t...

Newborn neurons like to hang with the 'in' crowd

...t. "When we analyzed them in three dimensions, the tip of the filopodia was preferentially associated with synapses already connected to other neurons," explains Toni. However, as the new neurons matured, the tiny tips filled out and started to monopolize the synaptic connections. "That's what we beli...

LIAI scientists make important finding on cytomegalovirus transmission

...ively battle the virus. "We used this approach to tip the balance in favor of the T cells that would reduce the virus," he said. The scientists got a stronger result by blocking the IL-10 receptor. "It significantly reduced the virus load in all the animals and in 50 percent of them it completely el...

'Short-circuit' found in ocean circulation

...ly - around Antarctica takes place just around the tip of South America and in the small region in the Atlantic south of the Falklands, called the Scotia Sea. Co-author Prof Andrew Watson, from the University of East Anglia’s School of Environmental Sciences, said they were fundamental findings. ...

Study offers clues to 'Broken Heart Syndrome'

...robe is threaded into the coronary arteries on the tip of a catheter, may show whether the patient has clogged arteries or unstable plaques that are not visible on coronary angiography. These findings will help guide long-term treatment. "Because we don't yet know what causes this phenomenon, we don'...

Discovery of new cave millipedes casts light on Arizona cave ecology

...d. The research we have conducted here is just the tip of the proverbial iceberg," he said. He added that this also means more work for resource managers, who will now have to pay much closer attention to the use and conservation of these caves and their biological attributes. Neil Cobb, curator o...

Soft-cell approach cuts animal tests

...ly unknown. "These tiny new substances are the tip of a huge chemical iceberg," says Hayes, Manager of the Chemical Safety and Applied Toxicology Laboratories at the University of New South Wales. "Worldwide, there are millions of known chemicals, of which more than 100,000 chemical compounds are...

Hofmeyr skull supports the 'Out of Africa' theory

...arity between a fossil skull from the southernmost tip of Africa and similarly ancient skulls from Europe is in agreement with the genetics-based "Out of Africa" theory, which predicts that humans like those that inhabited Eurasia in the Upper Paleolithic should be found in sub-Saharan Africa around 36,0...

Proteins important in Alzheimer's, Parkinson's disease travel in the slow lane

...proteins in the fast component move rapidly to the tip of the axon, until now, mechanisms of the slow movement of these disease-related proteins have been unclear as their transport had not been directly visualized." Roy devised a system to simultaneously visualize the transport of two labeled slow-co...

HIV protein enlisted to help kill cancer cells

...ising new approach to cancer therapy. "This is the tip of the iceberg," he says. "Now that we've proven w...sion they need to do it. Proteins like TAT-Bim can tip the balance in favor of death." To further enhance the cancer-killing power of TAT-Bim and similar...

Einstein's tea leaves inspire new blood separation technique

...ount of blood enters a fluid chamber, and a needle tip is placed close to the surface of the blood at an ... applied to the needle, generating ions around its tip that repel the oppositely charged ions close to it. This creates an airflow known as "ionic wind" th...

Some caterpillers just don't want to grow up

...eved by slow-developers after emergence would also tip the balance in favor of slow development. It is now a matter of further field and lab work to demonstrate that such benefits exist. ...

Computer imaging assists with facial reconstructive surgery

...l angle: the intersection of a line drawn from the tip of the nose to the chin and a line drawn next to the neck Facial convexity angle: the intersection of a line drawn from the forehand to the chin and a line drawn from the bottom of the nose to the chin In all patients, the porion to pogonion...

Stretching DNA to the limit

...entially pick up individual DNA molecules with the tip of a scanning probe microscope and stretch it while measuring the forces generated. These "stretch—release" measurements enable the accurate determination of changes in the elasticity of the DNA strands. Upon exposure to UV light, the force profile o...

Motor protein plays key role in connecting neurons

...ain road of a developing neuron, delivering to its tip a receptor that enables it to communicate with other neurons, scientists say. In another piece of the puzzle of how neurons form connections, researchers have found myosin X travels a portion of a neuron's backbone called the actin filament, a so...

T-ray breakthrough could make detecting disease far easier

... "In this way, the T-rays can be focused to the tip of the wire and guided into confined spaces or used to detect small objects, with important implications for disease detection or finding explosive that are hidden." ...

Penn researcher shows that DNA gets kinky easily at the nanoscale

...The technique involves dragging an extremely sharp tip across the contours of the molecule in order to create a picture of its structure. With this tool, Nelson and his colleagues measured the energies required to make various bends in DNA at lengths of five to 50 nanometers --- about a thousand times ...

A new target for painkillers

...could be applied to a hind paw with a blunt Teflon tip before the rat pulled away the paw. Normal rats...ca were able to tolerate a stronger touch from the tip ?both four hours and 24 hours after the drug was given. The highest dose completely reversed the hyp...

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