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Tag: "crawl" at biology news

How to steer a moving cell

...s awry ?allowing cells to leave the primary tumor, crawl through tissues and enter blood vessels ?spreading the cancer throughout the body. Richard Klemke, Ph.D., professor of pathology at UCSD School of Medicine and the Moores Cancer Center, and his colleagues set out to better understand the complexit...

Scientists find genes involved in the battle between Hessian flies and wheat

... the doors are all locked. Then the larvae finally crawl down to the base of the plant and die. This is death by frustration." Hessian flies can be controlled by using specifically bred wheat varieties called resistant wheat cultivars. Infestations by the flies also can be prevented by planting wheat af...

McBride shows DNA detective work with paper-eating bacteria that 'glide'

...es him is that it's a "gliding bacterium," able to crawl rapidly over surfaces by an unknown mechanism, which is the main subject of McBride's research with another glider called Flavobacterium johnsoniae. The two microbes are not closely related. "You are more closely related to a fruit fly than these t...

Cancer-killing invention also harvests stem cells

...e vascular wall, seeking signals that tell them to crawl out of the bloodstream. This is how white blood cells migrate to bacterial infections and tissue injuries. King set out to find a way to duplicate this natural process. First, he noted that the selectins form bonds with the white blood cells wi...

Wheat can fatally starve insect predators

...ter the eggs hatch, the resulting tiny, red larvae crawl down to the base of the wheat where they feed on the plant. If the plant isn't resistant to the insect, the larvae inject chemicals from their saliva into the plant that completely alter the wheat's physiology and growth. ...

Giant insects might reign if only there was more oxygen in the air

...body from the water, they were surprised to see it crawl away. Tracheae grow disproportionately This experiment was designed to find out: how much room the tracheal system takes up in the bodies of different-sized beetles whether tracheal dimensions increase proportionately as the beetles ...

Human stem cells delay start of Lou Gehrig's disease in rats

... days after injection. The rats were coaxed to crawl uphill on an angled plank, and their overall strength was calculated by considering the highest angle they could cling to for five seconds without sliding backwards. While all the rats grew progressively weaker, those injected with live cells did so ...

3-D model reveals secrets of metastasis

...e anti-cancer therapeutics. In these assays, 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 r...

Giant deep-sea tubeworm's meal ticket comes in as a skin infection

... pathogenic bacteria. Thesebacterial partners then crawl inward, throughvarious larval tissues, not to the stomachbut to an adjacent, "mesodermal" tissue. Upontheir arrival, the bacteria appear to inducethe immature mesodermal tissue todifferentiate and form the trophosome, wherethey proliferate and provid...

How low can you go? Ants learn to limbo

... horizontal barriers so that they can successfully crawl under it without slowing down. Tobias Seidl will b...rier and learned how to lower their body enough to crawl under without stopping", explains Tobias Seidl, "When the barrier was made invisible to them, they h...

Anthrax stops body from fighting back, study shows

... how they build tiny filaments that allow them to crawl throughout the body and eat invading bacteria. Ju...'s immune response, the study found. "Neutrophils crawl around in the body and roll around in the bloodvessels and whenever they sense bacteria, they gobble...

Tiny roundworm's telomeres help scientists to tease apart different types of aging

...till long, and moves with a youthful spring in its crawl despite short telomeres, they report in PLoS Genetics, available online now. In the past, preventing telomere shortening has often been portrayed as the key to preventing aging and living longer. In their study, Salk scientists Jan Karlseder, an ass...

Infectious disease expert warns of spread of Rocky Mountain spotted fever

... the cracks of stucco walls on patients' homes, in crawl spaces under these homes and on furniture placed outside for children and pets. All patients owned and had come in contact with dogs with the infected ticks. Four of the patients had a recent history of tick bite. Tests of the dogs' blood confirmed ...

Why are coyotes getting more aggressive?

...areas near food, keep bushes thinned and close off crawl spaces to prevent coyotes from resting or denning under buildings. To report a coyote that is acting strangely or causing a nuisance, call the nearest regional DEC office. For contact information for DEC regional offices, see www.dec.state.ny.us/web...

Natural Killers Could Lead to New Hepatitis Treatments

...ther T cells. The new studies show that NKT cells crawl along vessel walls, even upstream against blood fl...aid. The observations revealed that the NKT cells crawl randomly within the sinusoids, even against blood flow, passing one another and even changing direct...

New project aims to make large-scale lobster farms feasible

... more fascinating habits such as their tendency to crawl in huge single-file lines when crossing open areas between island coasts and reefs, will be the focus of the next Harbor Branch Ocean Science Lecture Series event, on March 9. "Spiny lobsters are one of the most highly-prized fisheries species in th...

Not-for-profit publishers call NIH public access rule a missed opportunity

...n enhanced search engine that works like Google to crawl the journals' full text articles and link to the final published articles residing on the journal websites. This would offer significantly more assistance to those seeking medical research results than a database of NIH-funded manuscripts can provide...

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