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Tag: "shorter" at biology news

Combination therapy boosts effectiveness of telomere-directed cancer cell death

...ells. With every cell division,telomeres get a bit shorter until eventually they become so short thatthe enzymes that copy DNA for cell division no longer work properly andthe cell stops dividing. In a sense, telomeres function as a kind ofcounting mechanism that regulates how many times a cell can divide.In...

GATA: a graphic alignment tool for comparative sequence analysis

...ells. With every cell division,telomeres get a bit shorter until eventually they become so short thatthe enzymes that copy DNA for cell division no longer work properly andthe cell stops dividing. In a sense, telomeres function as a kind ofcounting mechanism that regulates how many times a cell can divide.In...

Open microfluidic and nanofluidic systems

...ty to work with much smaller reagent volumes, much shorter reaction times, and the possibility of massive parallel processing. In general, this should lead to increased throughput and, thus, to reduced cost of (bio)chemical analysis. In addition, such integrated labs-on-a-chip have many potential application...

South America's vast pantanal wetland may become next everglades, UNU experts warn

...ed also to regulate seasonal flooding. A lower and shorter flood peak in the Cuiabá River, however, could have profound ecological impacts in the northern Pantanal. "Inter-linkages approach" needed to manage the Pantanal The complex interconnections and inter-linkages at the ecological level ?as for exampl...

World's largest rainforest drying experiment completes first phase

...orter, more stunted forest. As the forest becomes shorter and its leaf canopy more open, compromising its remarkable resistance to fire, it is clear that drought in tandem with fire can swiftly push the tall, dense rainforests of the region towards savanna scrub. The amount of carbon that could be released ...

Pathogen-Mimicking Vaccine As Strategy For Cancer Therapy

...we can develop effective cancer vaccines in a much shorter time than the conventional approach of trying variables sequentially." The CVC has clinical research sites in Australia, Belgium, Germany, Japan, Switzerland, the UK and the USA. ...

US life expectancy about to decline, researchers say

... obesity, children today may live less healthy and shorter lives than their parents. "In addition to the enormous economic costs of obesity, the personal toll is incalculable," Ludwig said. "The rapidly escalating prevalence of childhood obesity and its most feared complication, Type 2 diabetes, raises the ...

Wisconsin researchers identify sleep gene

...leep deprivation. The mns flies, however, did have shorter life spans. Following the testing, the researchers noticed shaking in the flies' legs as the insects recovered from anesthesia. The observation led the team to focus on the Shaker gene, which produces this effect. Nevertheless, Shaker's main job in ...

Gray wolves maintain the food chain in winter

...gers. Altogether, their modeling studies show that shorter winters without wolves will create intermittent fo...s, late-winter carrion abundance will decline with shorter winters. But wolf kills buffer these shortages, providing meals that could determine whether scaveng...

Cerebral navigation: How do nerve fibers know what direction to grow in?

...ically modified to lack ephexin1 had significantly shorter axons. But when ephrin is present and binds to Eph receptors, ephexin1 is chemically modified, causing it to alter the cell's cytoskeleton, or internal scaffolding. This alteration makes the growth cone collapse, steering the axon in a new direction ...

Biochemists report discovery of structure of major piece of telomerase; implications for cancer

...r cells divide rapidly, their telomeres should get shorter more quickly than normal cells. However, because cancer cells have high levels of telomerase activity, which rebuilds the telomeres, cancer cells can maintain the length of their telomeres indefinitely. Although it is not known whether telomerase act...

Supercomputers to focus brains on AIDS dilemma

...nts take place in nanoseconds at length scales far shorter than the wavelength of light. By putting the molecules into motion in their simulations, the researchers discovered that there is a great deal of unexpected flexibility in this binding region, indicating that instead of only one there might be multip...

Report that delayed motherhood decreases life expectancy of mouse offspring

...icating that delayed motherhood in mice results in shorter life expectancy and reduced body weight in their offspring. Negative effects of late maternal age in women, such as abnormal numbers of chromosomes in their children, are well known. However, other potential negative effects on offspring from delaye...

Does vitamin C help prevent or treat the common cold? Maybe not, after all.

...n the day their symptoms started and experienced a shorter illness compared with people who took a placebo pill. (3) The authors say that the results in this single trial are "tantalising and deserve further assessment." Douglas and Hemilä's article summarizes their more detailed review of the evidence that...

Vitamin A's paradoxical role in influencing symmetry during embryonic development revealed

...with the result being that our right side would be shorter than the left one. "On the outside, the human body looks very symmetrical," says Yasuhiko Kawakami, a senior research associate in Belmonte's Gene Expression Laboratory and the first author of the Nature paper. "But, inside the human body, the patte...

Caloric restriction won't dramatically extend life span in humans: UCLA research

...s that people who consume the most calories have a shorter life span, and that if people severely restrict their calories over their lifetimes, their life span increases by between 3 percent and 7 percent -- far less than the 20-plus years some have hoped could be achieved by drastic caloric restriction. He ...

The genetic origins of corn on the cob

...y (e.g. typical corn) tend to have fewer branches, shorter branches, and fewer flowers whereas plants with less ramosa1 activity (e.g. sorghum, rice, and the ramosa corn variety described above) tend to have more branches, longer branches, and more flowers. "We also looked at a popular ornamental grass that...

$6.5 Million Grant for Microarray Center at Yale School of Medicine

...y (e.g. typical corn) tend to have fewer branches, shorter branches, and fewer flowers whereas plants with less ramosa1 activity (e.g. sorghum, rice, and the ramosa corn variety described above) tend to have more branches, longer branches, and more flowers. "We also looked at a popular ornamental grass that...

Novel plague virulence factor identified

...f better understanding Y. pestis pathogenesis. The shorter time and increased ease of experimentation can be especially important, the researchers continued, given potential use of Y. pestis as a biological weapon, they said. The results of the Duke research will appear Aug. 26, 2005, in the on-line edition...

New Look at DNA Hints at Origin of UV Damage

...f better understanding Y. pestis pathogenesis. The shorter time and increased ease of experimentation can be especially important, the researchers continued, given potential use of Y. pestis as a biological weapon, they said. The results of the Duke research will appear Aug. 26, 2005, in the on-line edition...

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