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Tag: "grow" at biology news

FDA sees nanotech challenges in every product category it regulates

...ld of engineering and science that is estimated to grow to $2.6 trillion in manufactured goods globally by 2014. As the Task Force report highlights, nanotechnology impacts every area of FDA responsibility—drugs, drug delivery systems, cosmetics, medical devices, and food products. Overall, the agency reg...

Research identifies protein that signals flowering in squash plants

...o flower. These are plants that flower as the days grow shorter, such as in the fall in temperate regions. Long day (LD) plants will flower when nights are short (and days are long), and typically flower in late spring or early summer. SD crops include rice and maize, and LD crops include wheat, barley, o...

New bacterium discovered -- related to cause of trench fever

...is one of the few in the world able to isolate and grow human Bartonella species, and culture of the new organism made study of the DNA much easier. Also collaborating on the research were scientists at the Massachusetts General Hospital of Harvard Medical School and the Centers for Disease Control an...

Brightening prospects of using fluorescent nanotubes in medical applications

...ng them to wavelengths of light that cause them to grow hot enough to destroy nearby cells. The approach has one drawback: He doesn’t have an easy way to identify the locations where the clusters attach. Nanotubes should work as well as gold clusters as microscopic blow torches while their fluorescence sh...

Alzheimer's disease to quadruple worldwide by 2050

... the global prevalence of Alzheimer’s disease will grow to more than 106 million by 2050. By that time, 43...de. The number of Alzheimer’s cases is expected to grow in Asia from 12.65 million in 2006 to 62.85 million in 2050; at that time, 59 percent of the world’s...

Newly discovered antibody may be body's natural defense against Alzheimer's

...es to form. These beta amyloid "oligomers" can grow into insoluble "fibrils" that cluster around brain cells and are a hallmark of Alzheimer's disease. While monomers are produced from birth and appear to be relatively benign, oligomers have been implicated as potent toxins responsible for Alzheimer's...

Small, self-controlled planes combine plant pathology and engineering

...es, researchers can ensure that only Fusarium will grow on the plates. Over the course of 75 different UAV-sampling flights above agricultural fiends at Virginia Tech’s Kentland Farm, Schmale and his colleagues collected more than 500 viable colonies of Fusarium, representing at least a dozen species. ...

454 sequencing identifies HIV drug resistance at early stage

...iss many low-level resistant HIV strains which can grow rapidly under drug selection pressure and lead to therapy failure. This retrospective study clearly shows that even resistance mutations present at the 1% level lead to premature failure of therapy” explained Michael Kozal, M.D. the senior author on...

Researchers demonstrate way to control tree height

...ble to create an elm tree – which ordinarily would grow to 100 feet or more – that is only five feet tall ...ists were able to create young poplar trees, which grow rapidly and can reach a mature height of 150 feet or more, that were anywhere from about 15 feet to ...

Helping chlorine-eating bacteria clean up toxic waste

...d enough answers, because the bacteria are hard to grow in a petri dish, said Ruth Richardson, Cornell assistant professor of civil and environmental engineering, who is following up on Gossett's and Zinder's work, in continued collaboration with them. She is partnering with Gene Network Sciences (GNS)...

Understanding why C. difficile causes disease -- it's hungry

...ards. The bacteria don't cause problems until they grow in abnormally large numbers in the intestinal tract. This can happen when the benign bacteria that normally inhabit the intestinal tract are reduced such as when people take antibiotics or other antimicrobial drugs. Then, C. difficile can cause sympt...

Adult stem cells from human cord umbilical cord blood successfully engineered to make insulin

...y help cure type 1 diabetes by allowing people to grow their own insulin-producing cells for a damaged or...xtract stem cells from an individual’s blood, then grow them in the laboratory to large numbers and tweak them so that they are directed to create a needed ...

Why do oysters choose to live where they could be eaten?

... captured versus landing on a suitable location to grow was conducted, it was found that more than 95 percent of an oyster reef is a safe zone for larvae. Given this low cannibalism risk at settlement, future payoffs appear to have driven the evolution of a gregarious settlement cue that promotes group li...

Scientists discover rare 'gene-for-gene' interaction that helps bacteria kill their host

... produces it to kill off other microbes that might grow in the corpse of the dead insect. To test their findings, the researchers produced a mutant Photorhabdus that is unable to make ST. Without ST, the bacteria were less virulent. The researchers then used a technique known RNA interference to preve...

Alien plants attack using 'resource conservation' as weapon, researchers say

...iently, however, they can photosynthesize-and thus grow and spread-faster, according to Funk and Vitousek. To compare the resource-use efficiencies of alien and native plants, the researchers studied three ecosystems in Hawaii-a forested area with limited light, volcanic soils with low nutrients and a ...

How to steer a moving cell

...olding, determines cell shape, helping the cell to grow and develop "growth cones." These are specialized structures at the tips of growing nerve fibers, called axons, which sense guidance signals in their environment and "steer" the axons. Cell movement also requires polarization to position the cell a...

The longest carbon nanotubes you've ever seen

...s, sensors and a host of other applications. To grow the aligned bundles of tiny tubes, the researchers combined advantages of chemical vapor deposition (CVD), a technique for creating thin coatings that is especially common in the semiconductor industry, with a novel substrate and catalyst onto which ...

Researchers attach genes to minichromosomes in maize

...maize kernels (called an endosperm) can be used to grow animal proteins and human antibodies that treat diseases and disease symptoms. Minichromosomes could enable new and better production of these foreign proteins and antibodies. In addition, scientists also may be able to use them to develop plants bet...

Spud origin controversy solved

...he remnant landraces of these early potatoes still grow in on the Canary Islands. For years, researchers have debated the birthplace of the European potato. While some scientists hypothesized that landrace introductions originated in the Andes, others believed that the introductions came from Chile. Wh...

Scientists seek useful traits in wild cottons

...s, Gannaway said. "Many of the cottons we grow for more seed are photoperiodic," Gannaway said. "...ys of temperate winter." As these cottons grow and mature, scientists keep a log of their physical, or phenotypic, characteristics. Remember Mom's ...

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