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Tag: "traveling" at biology news

Cellular message movement captured on video

... filmed red-fluorescence-tagged paxillin molecules traveling from cells’ outer membrane along green-fluorescence-labeled traces of cytoskeleton. Even without video evidence, scientists have confirmed over the past 10 years that higher organisms use paxillin as a transmitter of locomotion and gene-expression si...

New bacterium discovered -- related to cause of trench fever

...ngland Journal of Medicine.” The woman had been traveling in the Peruvian Andes. She suffered from potentially life-threatening anemia, an enlarged spleen and a high fever for several weeks, as do victims of malaria and typhoid. The Andes are also home to another Bartonella species, spread by sand flies. Th...

Newborn neurons like to hang with the 'in' crowd

...pecialized structures called synapses. As a signal traveling along a nerve branch arrives at the pre-synaptic area, it releases a chemical signal. The signaling molecules travel across the synapse and induce a signal on the neighboring, receiving nerve fiber or dendrite. A typical neuron sports about 7,000 syn...

Dinosaur hearing, listening to muscle noise, quieter cubicles

... sensors follow the passing of natural shear waves traveling along the muscle fibers. By the way, the Scripps scientists were originally interested in underwater noise effects and only later adapted their work to noise in muscle. (2pUW9; contact Karim Sabra, ksabra@mpl.ucsd.edu ) MEASURING VOCAL STRESSE...

Tracking sperm whales and jumbo squid

...is of the tagging data showed that the whales were traveling up to 60 miles a day within a relatively small area, suggesting that they had found an abundant supply of food. The tagged predators and prey must have crossed paths at some time during the experiment, Gilly noted. "Based on the locations of where...

Study calculates patient time costs associated with cancer care

...me associated with cancer care, such as time spent traveling to and from care, waiting for appointments, and re...s. They then estimated how long each patient spent traveling to, waiting for, and receiving care. The net costs were calculated using a dollar value of $15.23 pe...

Cold sore virus might play role in Alzheimer's disease

...foods, or even sunlight, the virus becomes active, traveling from its hiding places in the nervous system to cells around the mouth, damaging cells and causing cold sores. It was this cycle of activity and latency that Miller and Federoff focused on while looking at the brain cells of mice with different fo...

University of Alberta researchers unravel intricate animal patterns

...e classical, such as stationary pulses, ripples or traveling trains but they also describe new patterns that ha...eported before such as zigzag pulses, feathers and traveling breathers. This model doesn’t apply to specific species, says Eftimie. "However, we can think of ...

Researchers find hepatitis A and hepatitis C attack same protein to block immune defenses

...mon said, "It’s a significant risk for many people traveling overseas, because they fail to receive the vaccine." Hepatitis A has also been the cause of large food-borne outbreaks in the U.S. in recent years, including one in Pennsylvania that caused three deaths in otherwise healthy adults....

Neural bottleneck found that thwarts multi-tasking

...up to a second, and that's a long time when you're traveling at 60 miles per hour."...

National Academies advisory: Invasive aquatic species in the Great Lakes

...digenous aquatic species into the lakes by vessels traveling the St. Lawrence Seaway. The committee's final report will comment on the strengths and weaknesses of various options and recommend those that seem most promising. DETAILS: 9 a.m. to 5:30 p.m. on May 7 at the Marriott Toronto Downtown Eaton Centr...

Ocean's 'twilight zone' may be a key to understanding climate change

...day, but they are swept sideways by ocean currents traveling many thousands of meters per day. To collect sinking particles, oceanographers use cones or tubes that hang beneath buoys or float up from sea floor. That, Buesseler said, "is like putting out a rain gauge in a hurricane." While many studies have ...

Road-crossing in chimpanzees: A risky business

...terning, moving toward the front of the group when traveling toward potentially unsafe areas, such as waterholes, and bringing up the rear when retreating, but comparable data on great-ape progression orders have been lacking. Crossing of man-made roads, sometimes necessitated by intersection with longstanding...

U-M researchers use nanoparticles to target brain cancer

... esophageal, bladder and skin cancers. It works by traveling through blood vessels until it reaches the vessels...in barrier, which prevents harmful substances from traveling through the bloodstream into the brain. In order for chemotherapy to treat a tumor, it must penetrat...

Trotting with emus to walk with dinosaurs

.... For instance, it appears that the dinosaurs were traveling along a tidal flat, perhaps in family groups, since there are juvenile and adult tracks. If so, that could infer some sort of parental care, he said. At very least the tracks seem to support the idea that the dinosaurs were social animals, just like ...

3-D ultrasound scanner could guide robotic surgeries

... that had died. (An ultrasound video of the needle traveling toward and then precisely puncturing the animal's organ can be downloaded at http://transducers.bme.duke.edu/movies.php .) "Once the robot takes over, it sends the needle to within about 1.5 millimeters of the center of the target," Smith said. "T...

Movie spies on malaria parasite's sneaky behavior

...e merosome forming, pinching off the parasite, and traveling away with it along the blood vessel. "That is the beauty of this technique. You can really see what happens in real time--there are no gaps," said Amino, now a professor of biochemistry at Federal University of Sao Paulo, Brazil. The scientists als...

3-D model reveals secrets of metastasis

...ssays, cells crawl across the surface of a matrix, traveling in a single plane. But a new study indicates that this approach misses some crucial phenomena. Working in the labs of Whitehead Member Paul Matsudaira and MIT professor Douglas Lauffenburger, postdoctoral researcher Muhammad Zaman discovered that c...

One therapeutic dose of radiation causes 30 percent spongy bone loss in mice

...atients receiving radiation therapy and astronauts traveling on long space flights. "We were really surprised at the extent of bone loss," said lead researcher Ted A. Bateman of Clemson University. "We're seeing bone loss at much lower doses of radiation than we expected." The mice suffered the loss of trabe...

Cornell researchers find serious fish virus in Northeast for first time

...ld recommend that boaters clean their boats before traveling from one body of water to another and not dump bait minnows into open water after a day of fishing. VHSV was first reported in 1988 in the United States in spawning salmon in the Pacific Northwest. It was reported in North American freshwater fish ...

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