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Tag: "variety" at biology news

Researchers first to map gene that regulates adult stem cell growth

... but important because of its usefulness in a wide variety of future genetics studies. "We're thinking about cancer in a big way," Van Zant said. "This is a great example of translational research ?from the most basic type of genetic research all the way to possible treatments for patients." One big ob...

Scientists to track impact of Asian dust and pollution on clouds, weather, climate change

...chers previously have used channelrhodopsin-2 in a variety of experiments in cell culture, the Duke experimen...le that this new model can be used to study a wide variety of questions involving the brain. "There are a lot of tools that work well in simpler systems or ...

Common algae helps illustrate mammalian brain electrical circuitry

...chers previously have used channelrhodopsin-2 in a variety of experiments in cell culture, the Duke experimen...le that this new model can be used to study a wide variety of questions involving the brain. "There are a lot of tools that work well in simpler systems or ...

Ethanol vehicles pose a significant risk to human health, study finds

...cals that come out of a tailpipe are affected by a variety of factors, including chemical reactions, temperatures, sunlight, clouds, wind and precipitation,'' he explained. ''In addition, overall health effects depend on exposure to these airborne chemicals, which varies from region to region. Ours is the fi...

Applied scientists create wrinkled 'skin' on polymers

...ted, the method enabled the scientists to create a variety of patterns--from simple one-dimensional wrinkles to peculiar and complex hierarchical nested wrinkles--along desired paths. Specific examples to date include "S" shapes, circular patterns, and long horizontal channels akin to the repeating tines of ...

Researchers hot on the trail of brain cell degeneration

...unclear. It is likely that it is associated with a variety of different mechanisms. Research has shown that the destruction of cells be over-stimulation depends on excess entry of calcium into the cells. Researchers have long been trying to map how cells generate destruction signals in response to the calciu...

Stem cell transplants explored at Stanford as a possible treatment for hearing loss

... the institute. Heller's vision is to develop a variety of possible cures for deafness. For the past year and a half, since coming to Stanford from Harvard, he's been focused on two paths: drug therapy -which could be as simple as an application of ear drops - and stem cell transplantation into the in...

Birth rate, competition are major players in hominid extinctions

...ugh time, the human lineage evolved to fill a wide variety of ecological niches, but those species that fille...ects like seeds, tubers and bones. While it had a variety of food sources, they all required the crunching, grinding force of its teeth. Unfortunately, bush ...

Cancer researchers add spice to research against rare neuromuscular disease

...ce found in curry powder ?has been used to treat a variety of ills. In the last decade, Western medicine has been putting curry to the test, finding that the spice offers promise against breast cancer, melanoma, Alzheimer's disease and the blisters that come with radiation treatments for cancer. Chang not...

Discovery of an HIV inhibitor in human blood points to new drug class

...e for about 3 million deaths last year alone. A variety of molecules in human blood have been implicated in the inhibition of HIV-1, the researchers noted. However, it had remained elusive which circulating natural compounds are most effective in controlling viral replication in the body. In the new st...

Flavanols in cocoa may offer benefits to the brain

...ow this flavanol-rich cocoa may impact health in a variety of ways not previously known,?said symposium organizer Harold H. Schmitz, Ph.D., chief science officer at Mars, Incorporated, which helped sponsor today’s symposium and has supported research on cocoa flavanols for more than 15 years. “The findings ...

Protein found to shield pancreatic cancer cells from self-destruction

...D. Anderson and elsewhere to be overexpressed in a variety of drug-resistant cancer cells and in cancer that has spread from its original organ (metastasized). "In general, you rarely see overexpression of TG2 in a normal cell," says Kapil Mehta, Ph.D., professor in the M. D. Anderson Department of Experi...

Leukemic cells find safe haven in bone marrow

...archers reported. Mesenchymal cells give rise to a variety of different tissues, such as osteoblasts (bone-building cells) and chondrocytes (cartilage-building cells), and form the nurturing environment where normal blood cells and leukemic cells grow. "Leukemic cells that resist asparaginase and surviv...

Scientists unravel clue in cortisol production

...arning if there's too much for too long. Given the variety of its effects,understanding how cortisol is made is essential to producing medications that can alter its production. Scientists at the Georgia Institute of Technology have discovered an important step in cortisol production, finding that although ...

Birds found to plan for the future

...guarding against food shortages and maximising the variety of their diets. It suggests they have advanced and complex thought processes as they have a sophisticated concept of past, present and future and factor this into their planning.? Previous research by Clayton’s team has shown that scrub-jays have a...

Scientists identify specific enzymes that make meningitis hard to fight

... novel combination of enzymes is present in a wide variety of bacteria and that it has a direct impact on the infectivity of human pathogens." Dr Geoff Baldwin from Imperial's Division of Molecular Biosciences added: "The wide importance of DNA repair to the viability of all organisms is well established....

Study finds mercury prevalent in many western fish

...ercury entering the water via the atmosphere has a variety of natural and manmade sources, the researchers say, including coal power plants from as far away as China, the burning of heavy oils and other fossil fuels, and even forest fires. In the survey, the researchers did find 13 fish from eight differe...

Reminding doctors which antibiotics to prescribe cuts C. difficile infection rates

... narrow-spectrum antibiotic policies and suggest a variety of methods to ensure these are implemented, but feedback is not mentioned in national guidelines as a way of addressing prescribing behaviour," says Dr Stone. The team, working at the Royal Free Hospital in London, studied prescribing and CDI rate...

Ocean's 'twilight zone' may be a key to understanding climate change

...he carbon cycle below. The VERTIGO team examined a variety of processes to open a new window into the difficult-to-explore twilight zone. They successfully used a wide array of new tools, including an experimental device that overcame a longstanding problem of how to collect marine snow falling into the twil...

Fish growth changes enhanced by climate change

...slower growth in fishes has been correlated with a variety of life history traits ?from higher mortality to reduced food availability and increased age or smaller size at sexual maturity. He said comparisons of historical and modern oceanographic data indicate temperature trends very similar to the appare...

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