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Tag: "directly" at biology news

Field tested: Grasslands won't help buffer climate change as carbon dioxide levels rise

...," Yeates said. While microcompartments have been directly observed in only a few organisms, "surely there will be many more," Yeates said. "The capacity to create subcellular compartments is very widespread across diverse microbes. We believe that many prokaryotes have the capacity to create subcellular com...

Scientists discover genetic pathway responsible for breast cancer cell growth

...iguère. "Using cutting edge new technology derived directly from the human genome project, this study adds over hundred additional genes to this total." The technology used information obtained from the human genome project to create a new type of DNA microchip containing the partial DNA sequences of approxi...

Researchers develop new testing methods for potential monkeypox or smallpox outbreak

...confirm monkeypox cases requires that the virus be directly identified in blood or tissue samples. Because monkeypox virus is eventually cleared by the body, the evidence is quickly wiped out, resulting in a high percentage of unconfirmed cases due to the limited window of opportunity for diagnosis. In compar...

NHGRI expands effort to revolutionize sequencing technologies

...y denaturation. The resulting system amplifies DNA directly on a microchip, enabling the process of sequencing to be done on a single miniaturized device. Jingyue Ju, Ph.D., Columbia University, New York. $970,000 (3 years) "Modulating Nucleotide Size in DNA for Detection by Nanopore" This group will design...

Discarded placentas deliver researchers promising cells similar to embryonic stem cells

...termine if amnion-derived cells that are delivered directly to tissues would cause tumors, the researchers conducted studies in immune system-deficient mice and found no evidence that tumors had developed seven months after the cells were injected into multiple sites. While amniotic epithelial cells do not s...

Color perception is not in the eye of the beholder: It's in the brain

... the living retina allowed Williams to shine light directly into the eye to see what wavelengths each cone reflects and absorbs, and thus to which color each is responsive. In addition, the technique allows scientists to image more than a thousand cones at once, giving an unprecedented look at the composition...

What Makes The Brain Tick, Tick, Tick: Researchers Gaining New Insights Into Brain's Internal Clock

...arning and memory, you could argue that time isn't directly perceived, but that we make temporal discriminations relative to memories of previous durations. Such features have made the machinery of interval timing more elusive, and some even questioned whether an internal clock of this sort even exists." In ...

Hunger in America rises by 43 percent over last five years

...2 million Americans live in households that suffer directly from hunger and food insecurity, including nearly 14 million children. That figure is up from 31 million Americans in 1999. "This is an unexpected and even stunning outcome," noted center director Dr. J. Larry Brown, a leading scholarly authority on...

Hepatitis C complicated by morphine withdrawal

...lpha promoter (the switch for making IFN-alpha) by directly inhibiting its activator, interferon regulatory factor-7 (IRF-7), and this effect was more pronounced in HCV replicon-containing cells. Finally, the ability of IFN-alpha treatment to block HCV replicon expression (85%) fell following MW (60%) and PW...

Emerald Spectre haunts Ontario's ash forests

...he first line item ever to target invasive species directly ?$85 million, much of which is earmarked for battling the borer and another forest pest, the Asian longhorn beetle, which has infected hardwood trees in areas around Toronto, New York and Chicago. If containment isn't effective, MacIsaac knows well...

Weapon performance determines mating success in the collared lizard

...thesis that weapon performance, which is likely to directly influence fight outcomes, has far stronger effects on fitness than size. The strong influence of weapon performance on reproductive success suggests that selection acts on weapon performance, which in turn drives the evolution of weapon morphology. A...

Bone marrow stem cells may heal hearts even years after heart attacks

... heart function following injections of stem cells directly into the heart muscle or infusions of stem cells i... studies showed benefits from injecting stem cells directly into damaged heart muscle or performing intracoronary infusions of stem cell into affected coronary ...

Researchers find Amchitka seafood safe for now

...00 pages of appendices), many of which will now go directly into the academic literature. * Required recruitment and coordination of unusually diverse scientific talent. Fourteen senior scientists from 6 major universities were involved in the work. * Field work in a very remote and taxing environment...

Cracking the perception code

...rain known as the primary somatosensory cortex, is directly related to monkeys' ability to tell how fast something is vibrating, Romo said. But the neurons' firing patterns are complex, and it's been tricky to tease out "which component of the neuronal activity was more likely associated with behavioral perfo...

Oldest dated evidence of cattle in southern Africa found

...y (AMS) radiocarbon technique, provides the oldest directly dated evidence of cattle in southern Africa. Domestic sheep were also present at Toteng at about the same time. Historical and linguistic information suggest northern Botswana figured prominently in the arrival and dispersal of livestock in southern...

Minimally Invasive Cancer Treatments Highlighted

...al radiologists provide targeted cancer treatments directly to the tumor without significant damage to the nea...surgical advances, such as delivering chemotherapy directly to the affected organ (chemoembolization), killing the tumor with heat (radiofrequency ablation) or ...

Scientists develop nanotech-laser treatment that kills cancer cells without harming healthy tissue

...liver therapeutic molecules of DNA, RNA or protein directly into the cell nucleus to fight various infections and diseases. "Nanotechnology has long been known for its applications in electronics," Dai concludes. "But this experiment is a wonderful example of nanobiotechnology--using the unique properties of...

Biotechnology's newest chemical tool

... grab the methyl group from AdoMet and transfer it directly to DNA, positioning it with enviable specificity within the sequence. This specificity suggests that the enzymes can be a useful tool in the laboratory. But Klimasauskas and colleagues wanted the flexibility to attach more than just a simple methyl g...

Customized gene chip provides rapid detection of genetic changes in children's cancer

...ansfers information to RNA, the current microarray directly identifies changes in DNA. "These DNA changes, involving gain or loss of genetic material, are important for neuroblastoma prognosis," said Dr. Maris. In pinpointing specific regions of chromosomes with loss in DNA, the technology may help confirm a...

Plants reveal a secret and bring researchers nearer a cleaner future

...ate, which is particularly important because it is directly involved in the molecular oxygen formation. They suggest, furthermore, an extension of the "Kok cycle" with an additional intermediate and propose a new reaction mechanism on a molecular basis for the release of dioxygen. This gives new insight into ...

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