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Tag: "grew" at biology news

Smell of success for nanobiosensors

...NOSED researchers genetically copied from rats and grew in yeast, would be needed for an electronic nose to detect almost any smell because different proteins react to different odorants and it is the resultant combination of reactions that identifies a certain smell. Nanotechnology makes such an electron...

Corals switch skeleton material as seawater changes

...producing corals grown in artificial ancient water grew significantly slower than did the aragonite-producing corals grown in modern water. "The reduction in the corals' rate of growth that accompanied their exposure to the chemically modified seawaters is further evidence of corals' extreme sensitivity ...

Bioengineered tissue implants regenerate damaged knee cartilage

...onto scaffolds made of esterified hyaluronic acid, grew them for another 14 days on the scaffolds, and then implanted them into the injured knees of the study patients. Cartilage regeneration was seen in ten of 23 patients, including in some patients with pre-existing early osteoarthritis of the knee se...

Selectively blocking inflammatory signals may protect mice from MS

...ssue of the Journal of Neuroscience. The approach grew out of a novel explanation, quickly gaining followers, for the mechanism of nerve damage caused by multiple sclerosis. Instead of concentrating on the alterations that result in autoimmune assaults on the nervous system, researchers led by Brian Pop...

Scientists discover that ancient genes dictate flowering, fall bud set

... FT and CO also controlled this process. When they grew trees originating from different latitudes in Europe in a growth chamber, the Umea Plant Centre team observed that "This response is under strong genetic control and is maintained when trees are moved," the article reports. However, they did observ...

MIT engineers probe spiders' polymer art

...e said. "I'd never seen a spider this big. I never grew up around anything with furry knuckles." But he quickly settled into dissecting the peanut-sized and -shaped protuberance on the spiders' backs containing their silk-producing glands and spinnerets. Spiders don't actually spin ("spinning" refers to...

Parasitic plants sniff out hosts

...rchers report that 80 percent of the dodder plants grew onto the side of the filter paper nearest the tomato, with many growing directly towards the tomato plant. Statistical analysis provided strong evidence for directed growth by dodder, but did not indicate what causes the directionality. The Penn St...

Solved: The mystery of flesh-eating bacteria's relentless attack

...iving the original bacteria developed lesions that grew until the mice died; while mice receiving the mutant strain developed only small lesions that spontaneously healed. "The experiments show that SilCR downregulates the production of ScpC, and ScpC is what destroys the interleukin-8," said Hanski. "...

Increase in carbon dioxide emissions accelerating

... that atmospheric concentrations of carbon dioxide grew by two parts per million in 2005, the fourth year in a row of above-average growth. "To have four years in a row of above-average carbon dioxide growth is unprecedented," Dr Fraser says. Dr Fraser says the 30-year record of air collected at the Au...

Pure carbon nanotubes pass first in vivo test

...notubes in research lab animals. "This research grew out of Smalley’s vision, and he followed our progress and offered daily guidance, even from his hospital bed at M.D. Anderson," Cherukuri said. “Up to his very last day, he was simultaneously fighting his own battle with cancer and developing new way...

Steep oxygen decline halted first land colonization by Earth's sea creatures

...l oxygen levels rose appreciably, before dinosaurs grew to their familiar gargantuan sizes. "Dinosaurs thrived and nothing else did. There's an explanation for that, and it is that the air sac breathing system in dinosaurs and their descendants, modern birds, is more efficient than systems used by othe...

Cancer stem cells linked to radiation resistance

...he researchers extracted cells from the tissue and grew them in cultures in the laboratory. For the second model, they transplanted the glioblastoma tissue into the frontal lobes of the brains of mice. The researchers first measured the number of glioma stem cells present in the original tissue and the...

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

...onds without sliding backwards. While all the rats grew progressively weaker, those injected with live cel...them developed into nerve cells, and many of those grew new endings connecting to other cells in the rat's spinal cord. "These stem cells differentiate m...

Pressured by predators, lizards see rapid shift in natural selection

... favored to elude capture. However, as the lizards grew ever more arboreal in habitat, the scientists proj...r six months, during which time the Anolis lizards grew increasingly arboreal, selective pressures were exactly the opposite: Survivors were now characteriz...

Sandia researchers discover way to see how a drug attaches to a cell

... to the body.) In earlier work, Shelnutt's group grew large continuous nanosheets of platinum on liposome templates, forming foam-like platinum nanostructures. This method provided no way to control shape and size. The new method reported in the paper uses a different technique to produce porous plati...

Embryonic patterning makes the feathers fly

... the epithelium or the mesenchyme" The researchers grew skin explants in an environmental chamber that enabled them to continually observe cell movements and track individual cells using fluorescent markers. The results were recorded in real time by time-lapse video microscopy. The resulting chicken feath...

End of deforestation in view? Experts advance new way to size up global forest resources

...lmost 1%. With one exception, the growing stock grew from 1990 to 2005 in the 50 most forested nations ... in Central America show tree cover in El Salvador grew by about one-fifth from 1992 to 2001. Forests are also recovering fast in the Dominican Republic, i...

Neural networking nanotubes

...at a thickness of just a few nanometers. They next grew neuron precursor cells on this film. These precursor cells successfully differentiated into highly branched neurons. A voltage could then be applied, lateral to the SWNT film layer, and a so-called whole cell patch clamp used to measure any electrica...

American scientist's research of life's first cells

...Simple Building Blocks for Complex Networks." Milo grew up in Kfar-Saba, Israel. As an undergraduate, he studied physics and mathematics at the Hebrew University in Jerusalem. His PhD research, conducted under the guidance of Uri Alon at the Weizmann Institute, centered on analyzing complex biological net...

Natural protein stops deadly human brain cancer in mice

...w. In the mice with BMP4-treated cells, no cancers grew at all. Three to four months after injection, all mice that got untreated cells died, and nearly all mice with BMP4-treated cells were alive. Next, the scientists delivered slow-release BMP4-containing "beads" directly into mouse brains with impla...

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