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Tag: "fate" at biology news

New push for public health, AIDS spending at African Union summit

...oversial drug trials, battles over patents and the fate of millions of orphans are also likely to be discussed at a summit session devoted to the fight against AIDS on the world's poorest continent, home to nearly two-thirds of the 39.4 million people worldwide infected with HIV or AIDS. The World Health...

Growth in the sea comes down to a struggle for iron

...rom UMaine and other universities are studying the fate of iron in marine waters. Their findings could help determine the fate of something else, a controversial proposal to address the threat of global warming. The National Sc...

Anti-bacterial additive widespread in U.S. waterways

... a toxic antimicrobial chemical whoseenvironmental fate was never thoroughly scrutinized despite large scaleproduction and usage for almost half a century, according to ananalysis conducted by researchers at the Johns Hopkins Bloomberg Schoolof Public Health. The chemical, triclocarban, has been widely us...

Newly-discovered class of genes determines ?and restricts ?stem cell fate

...es ?dubbed pangenes ?can both govern a stem cell's fate and put a hold on future differentiation until the...tell a cell what it should become and restrict its fate by preventing differentiation. The ability of a single biochemical factor or complex of factors to h...

Bound for destruction: Ubiquitination protects against improper Notch signaling

...is known to beimportant in a number of neural cell fate determination anddevelopmental processes, and is c...gshows the ability to sense a small change in cell fate and amplify it,acting as a sort of contrast enhancement mechanism in cell fatedetermination. Notch ...

Finding Cures For Tropical Diseases: Is Open Source An Answer?

... saved worldwide. The usual strategy to avoid this fate is to finda drug candidate that affect a "profitable" disease in addition to the"non-profitable" one. PLoS Medecine has an article about a possiblesolution titled "Finding Cures for Tropical Diseases: Is Open Source an Answer?" The whole article is...

Scientists discover unique microbe in California's largest lake

..., Mexico, considerable attention hasfocused on the fate of the now highly polluted water body. Aftermassive fish kills and avian mortality in the 1990s, federal agenciestargeted the lake for one of the nation's largest restoration projects.Wood says the discovery also shows that the Salton Sea, with its h...

The Bacteria's guide to survival

...at some bacteria influence gene expression and the fate of cells in their hosts by tugging on the host cells' membranes with their pili. For bacteria like N. gonorrhoeae that pass directly from host to host, the researchers argue, it would be in a bacterium's interest to help keep its host alive. And bact...

Gray wolves maintain the food chain in winter

...lish winter trends and model wolves' impact on the fate of resident scavengers faced with a changing climate. Their models show that wolf kills temper the potentially devastating effects of climate-related carrion shortages on scavengers. Unlike mountain lions and grizzly bears, wolves abandon their prey ...

New insight into regulation of blood stem cells

...ifferentiation. The ability to influence stem cell fate decisions would be expected to have a major impact on the field of stem cell therapy and to provide important in vitro model systems for the identification of genes and compounds that can be used to regulate the process of stem cell differentiation."...

Survey finds silver contamination in North Pacific waters

...to use silver as a tracer element for tracking the fate of industrial emissions from Asia, Ranville said. "Atmospheric pollution from Asia is becoming a serious problem for the western United States, and this may be a valuable tool for tracing those emissions, both in the atmosphere and in the water," sh...

Edible bivalves as a source of human pathogens: signals between vibrios and the bivalve host.

...n of factors that are important in determining the fate of vibrios within the bivalve host, such as bacter...es develop in natural conditions and determine the fate of vibrios in the bivalve host. ...

Scientists discover that three overlapping signals in embryo help get the backbone right

...hese five factors had only a minimal effect on the fate of the embryo. Khokha and Harland decided to try blocking more than one, and chose to work in embryos of the frog Xenopus tropicalis, a close relative of the more common laboratory frog Xenopus laevis. X. tropicalis is easier to work with, because i...

Oldest cranial, dental and postcranial fossils of early modern European humans confirmed

...ssions of modern human emergence in Europe and the fate of the Neandertals. The Mladc remains are universally accepted as those of early modern humans. However, there has been an ongoing debate as to whether they also exhibit distinctive archaic features, indicative of some degree of Neandertal ancestry,...

Fox Chase study shows that weakened T-cell receptor signals change T-cell lineage

...ether different forms of TCR predetermine a cell's fate and whether or not their signals control the choice." In the new study, Wiest and his colleagues use several models to manipulate the signaling strength of the gamma-delta TCR. A strong signal, produced in the presence of a specific binding substanc...

Scientists find viruses can't stick to sea bugs in the dark

...e delicate balance of the seas, and so the overall fate of the planet, relies on even smaller microbes called cyanophages - marine viruses that specifically attack and infect cyanobacteria. These phages can seriously damage the health of the cyanobacteria, and also the sea. Ying Jia, from the University ...

Random gene expression may drive HIV into hiding

... and others turned it off. This dichotomy in cell fate from genetically identical cells is consistent with the idea that random fluctuations in gene expression control what happens to the cells, the researchers said. To see if this really was the best explanation, they conducted a large array of experime...

Poaching, logging, and outbreaks of Ebola threaten central African gorillas and chimpanzees

...s of collaborations are going to be needed, as the fate of apes in Central Africa relies not only on addressing the typical issues of poaching and habitat destruction, but also the problems of the rapid spread of disease," said Christophe Boesch of the Wild Chimpanzee Foundation, an author of the action p...

Brain size may depend upon how neural cells are cleaved

...l progenitor cells in the neocortex determines the fate of the resulting daughter cells. However, nothing ...er impairment of Gβγ has any consequences for cell fate in division, because it has been speculated that the different division planes dictate the ultimate ...

Several minute intermediate stage in virus-cell fusion discovered; opportunity for drug development

...ry of its genetic contents into the cell, when the fate of the host cell still hangs in the balance. This intermediate stage, which can last several minutes, may represent a window of opportunity for drug development. The remarkable findings, captured on video, were published by the Proceedings of the Na...

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