Tag: "fate" at biology news

Gene profiling reveals the essence of 'stemness'

...ault model' we proposed, which is that the default fate of embryonic stem cells is to become neurons." Comparing stem cells with their differentiated counterparts revealed genetic differences that will offer clues to developing techniques to induce stem cells to differentiate into adult cells, said Melto...

Crucial gene found for embryonic stem cell maintenance

...ing of the genetic factors that regulate stem cell fate and preserve the delicate balance between the maintenance of a pluripotent cell population and the differentiation of more specialized cell types. In the October 15th issue of Genes & Development, Dr. Patricia Labosky and colleagues add Foxd3 to the...

Foxd3 gene allows stem cells to remain stem cells

... embryo," said Labosky. "These genes determine the fate of cells by turning on or off other genes in response to signals in the embryo." Foxd3 joins previously identified genes, such as Oct4 , Fgf4 , and Sox2 , which control the pluripotency of embryonic stem cells in the early stages of embryogenesi...

Popular weed killer feminizes native leopard frogs across Midwest

... now engaged in studies to determine the ultimate fate of these feminized tadpoles. "In my opinion, this is an unacceptable risk." Hayes and his colleagues sampled leopard frog tadpoles in eight separate ponds, ditches, rivers and streams in the Midwest during the summer of 2001 and found feminized male ...

$3.2 million project to document dioxin levels in Houston ship channel

...ic consensus on dioxin, including its sources, its fate and transport, levels of human exposure, and its toxic effects on humans and other animals. EPA information on dioxins is available on the Web at http://cfpub.epa.gov/ncea/cfm/dioxin.cfm "Dioxins are a family of contaminants that are very tough to...

Observing proteins and cells in the wild

...ing approach would allow researchers to study cell fate either outside the body in culture, or in whole developing organisms. "With quantum dots, you could follow each cell in the worm C. elegans continuously from its birth in an embryo to its final destination in an adult three and a half days later," s...

Food for thought: Cells dine on their own brains to stay fit and trim

.... The only part of the cell thought to escape this fate is the nucleus, which is as essential to a cell as our brains are to us. Biologists had always thought that taking a bite out of the nucleus would effectively end a cell's life. Goldfarb found that when the yeast cell wants to recycle some of the mac...

'The end of the world' has already begun, UW scientists say

... years away, but people really should consider the fate of our world and have a realistic understanding of where we are going," said UW astrophysicist Donald Brownlee. "We live in a fabulous place at a fabulous time. It's a healthy thing for people to realize what a treasure this is in space and time, and...

Scientists find geochemical fingerprint of World Trade Center collapse

...rm processes that affect the input, dispersal, and fate of particles and contaminants in the lower Hudson ...s. One of the tools available for finding out the fate of fine particles and contaminants released into estuarine systems is the measurement of geochemical...

Scientist pursues role of possible new cell type

.... What we are finding in these cells is that their fate is not restricted, they are flexible."...

Enzyme controls 'good cholesterol'

...L, he said. He and his colleagues are studying the fate of patients with this type of enzyme to determine whether it is beneficial or not. Once they determine whether the variant form of HDL is good or bad, it can become a target for drug developers who will attempt to manipulate levels of "good" cholest...

Neural development in time and space

...mplicated earlier in the spatial control of neural fate determination. "Identifying new roles to this bunch of old proteins is intriguing" says Dr. Ericson, "since it helps to demystify the time aspect of neural development and further indicates that the temporal and spatial control of neuronal differenti...

Coots can count

...nomenon. Lyon and his field assistants tracked the fate of every egg in more than 400 coot nests, checking the nests every day. Because no bird can lay more than one egg per day, parasitism was readily detected. In addition, coot eggs laid by different parents can often be distinguished on the basis of co...

The roots of human behavior? AAAS and The Hastings Center host a public meeting

...t a print out of one's genome is not equivalent to fate with respect to behavior and behavioral disorders. It is only probabilistic information -- that can be readily overinterpreted and misused," he says. The meeting, which is funded by the National Institutes of Health, has grown out of a multi-year col...

Science picks-leads, feeds and story seeds (May 2003)

...nd predict the life expectancy of the hull and the fate of the fuel still trapped. Butch Kinerney, bkinern...e mechanisms that control subsurface migration and fate of contaminants in arid environments.) Gail Wendt, gwendt@usgs.gov ,703-648-5604. FEEDS Water, ...

Woods Hole Oceanographic Institution scientists respond to Buzzards Bay oil spill

...considered a baseline for studies of the long-term fate and effects of petroleum hydrocarbons in marine sediments. WHOI scientists have been studying the West Falmouth site regularly since 1969 and still find residues of the oil in salt marsh sediments. Assistant Scientist Christopher Reddy of the Instit...

Top 25 turtles on death row

...and tortoise. As the last of his species, George's fate is sealed. He is destined to remain a bachelor for the rest of his days--about another 100 years....

Systems tool new resource to aid groundwater cleanup

...odels and databases that predicts the movement and fate of contaminants through the vadose zone, the groundwater and to the Columbia River. The vadose zone is the soil above the groundwater. SAC also assesses the impact of contaminants on human health, animals and the environment. Instead of showing each ...

Scientists discover key gene in artery formation

...the genes that dictate venous versus arterial cell fate remain largely unknown. As Dr. Lawson explains, "U...el insight into the specification of arterial cell fate during development, these finding illustrate the utility of this transgenic zebrafish system, which ...

ESHRE continues ban on human reproductive cloning

...s a sign of commitment and sincere concern for the fate of infertile people." He said it was also important to ensure that the whole field of stem cell research and therapeutic cloning was not damaged by being caught up in the outcry over reproductive cloning. "ESHRE supports cloning for therapeutic purpo...

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