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Tag: "origins" at biology news

Random gene expression may drive HIV into hiding

...ant step in moving from studies that elucidate the origins of stochasticity in gene expression to those that investigate the consequences of such molecular noise on cellular function. The authors [present] a scenario in which HIV-1 can hedge its bets by having an inherent ability to proceed either to latency...

Ancient DNA helps clarify the origins of two extinct New World horse species

... child of evolution," says Cooper. To explore the origins of the horses, the authors examined mitochondrial DNA (mtDNA) extracted from fossilized horse bones. Mitochondria, which have their own genome, contain a stretch of sequence that's useful for inferring evolutionary relationships: though the region un...

Venom doc tracks down snake bioweapons

... be a reptile-specific protein. "The wide-ranging origins of snake venom toxin - body counterparts explain the amazing diversity of ways that venomous snakes can kill their prey and why they have so much potential use in medical research," Fry explains. Fry hopes that his findings will further research eff...

Agilent Technologies new genome analysis technology set to accelerate Australia fight against mesothelioma

... may ultimately lead to increased knowledge of the origins and development of this and other cancers. "Agilent's CGH technology will allow us to study the entire genome in a manner that hasn't been possible in previous genomics research," said Holloway. "Upon completion, this project will produce the larges...

The biggest family tree ever

...ing is part of a larger undertaking to unravel the origins and migratory history of mankind thousands of years back in time by analyzing genetic samples from at least 200,000 people all over the world. National Geographic and IBM are embarking on the Genographic Project, a landmark, five-year global study o...

Defenseless plants arm themselves with metals

...ong stymied Salt and his colleagues centers on the origins of this trait. While essential as micronutrients, metals are toxic in high levels. Most plants have mechanisms that keep metals in the environment out of their tissues. So what would have driven some plants to do just the opposite? "The existing exp...

Researchers make gains in understanding antibiotic resistance

... According to Steitz, insights about the ribosomal origins of antibiotic resistance are already being applied to the development of new antibiotics. One company leading the way is Rib-X Pharmaceuticals, which was founded by Steitz and colleagues at Yale. "About half of current antibiotics target the ribosome...

Papers of DNA Pioneer and Nobel Laureate Francis Crick Added to National Library of Medicine’s Profiles in Science Web Site

...genome, and genetic fingerprinting, all have their origins in Crick’s inspired work,?said Donald A.B. Lindber...scovery as confirmation of his conviction that the origins and processes of life, including human consciousness and free will, can be reduced to fundamental la...

Weizmann Institute scientists develop a new approach for directing treatment to metastasized prostate cancer in the bones.

...lular cause of graying hair whileinvestigating the origins of malignant melanoma, the potentially deadlyskin cancer. Thescientists traced the loss of hair color to the gradual dying off ofadult stem cells that form a reservoir that spawns a continuous supplyof new pigment-manufacturing cells, called melanoc...

Fundamental Finding Yields Insight into Stem Cells, Cancer; Opens Door to Drug Discovery

...lular cause of graying hair whileinvestigating the origins of malignant melanoma, the potentially deadlyskin cancer. Thescientists traced the loss of hair color to the gradual dying off ofadult stem cells that form a reservoir that spawns a continuous supplyof new pigment-manufacturing cells, called melanoc...

Scientists discover the cellular roots of graying hair

...lular cause of graying hair whileinvestigating the origins of malignant melanoma, the potentially deadlyskin cancer. Thescientists traced the loss of hair color to the gradual dying off ofadult stem cells that form a reservoir that spawns a continuous supplyof new pigment-manufacturing cells, called melanoc...

Study identifies predictors of HIV drug resistance in patients beginning triple therapy

...ase oftheir work. They are currently examining the origins of BCE toxicity atthe single-neuron level to learn what genes are turned on and off bythe exposure to the chemical mixture. The research is focused on afamily of genes known as P53, which helps to regulate the cell cycle.They have also moved their st...

Clam embryo study shows pollutant mixture adversely affects nerve cell development

...ase oftheir work. They are currently examining the origins of BCE toxicity atthe single-neuron level to learn what genes are turned on and off bythe exposure to the chemical mixture. The research is focused on afamily of genes known as P53, which helps to regulate the cell cycle.They have also moved their st...

UAB scientists discover the origin of a mysterious physical force

...ious force in detail and have discovered where its origins lie. In the same way that a flag flutters in the direction the wind is blowing, at a microscopic level water molecules are gently attracted towards the direction in which an electric field is pointing. However, when the water is in contact with surf...

Molecular biology fills gaps in knowledge of bat evolution

...and conflicting or incomplete theories about their origins and divergence. Now, a research team including University of California, Riverside Biology Professor Mark Springer, has published a paper in the Jan. 28 issue of the journal Science that uses molecular biology and the fossil data to fill in many of ...

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