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Tag: "link" at biology news

UF study first to quantify validity of DNA I.D. tool using marine snails

...aid. "Scientists studying butterflies are able to link caterpillars to adults in the field without having... said. "They can just sequence the caterpillar and link it to the adult butterfly." Probably the most common application, for scientists and consumers alik...

Research Permits First-Ever Visualization of Psychological Stress in the Human Brain

...sting was complete. These results suggest a strong link between psychological stress and negative emotions. On the other hand, the prefrontal cortex is also associated with the ability to perform executive functions -- such as working memory and goal-oriented behavior -- that permit humans to adapt to env...

Extinct giant deer's descendant found in UK

...r Ian Barnes, UCL Department of Biology, prove the link with the fallow deer by basing their findings on DNA sequence evidence taken from the long-extinct deer and an analysis of the key characteristics it has in common with modern deer. The fallow deer (or Dama dama) is the last surviving member of the...

CO2 sensing proves critical for fungal pathogens to adapt to life in air and human hosts

...n in the fungal kingdom. The identification of a link between CO2 sensing and fungal virulence may have broad implications for the study of microbial pathogens and the role of adenylyl cyclase in virulence trait regulation by CO2. Furthermore, it may in time facilitate the development of a new class of ...

Study Holds Promise For New Way To Fight HIV

...r Ian Barnes, UCL Department of Biology, prove the link with the fallow deer by basing their findings on DNA sequence evidence taken from the long-extinct deer and an analysis of the key characteristics it has in common with modern deer. The fallow deer (or Dama dama) is the last surviving member of the...

Stem cells' electric abilities might help their safe clinical use

...s, the basis of electricity, provides an important link to the differentiation, or maturation, and cell proliferation, or growth of human ESCs." Because human ESCs can potentially provide an unlimited supply of even highly specialized cells, such as brain and heart cells, for transplantation and cell-bas...

Life in deadly conditions

...(Greek "salt-lovers") archaea, called HaloLex (see link below). Using the database, genetic and protein data about the organisms is tied to information about their structure and function. The newest genome on HaloLex is now that of Natronomonas pharaonis, whose genetic information was made available by Mi...

Mechanism for Epstein-Barr virus protein's role in blood cancers discovered

...ty of Pennsylvania School of Medicine identified a link between a critical cancer pathway and an Epstein-Barr Virus (EBV) protein known to be expressed in a number of EBV-associated cancers. Their findings demonstrated a new mechanism by which EBV can transform human B cells from the immune system into ca...

A little telomerase isn't enough

...geneticist and her team have discovered a critical link between the health of stem cells and the length of the chromosome ends within them. Chromosome ends, or telomeres, are repetitive stretches of DNA that protect chromosomes in much the same way as plastic tips on shoelaces prevent the fabric from fra...

Researchers identify molecular anchor that allows bacterial invasion of central nervous system

...sugar complex that anchors LTA, iagA establishes a link that allows bacteria to begin making its way into the nervous system. The researchers found that removing the iagA gene from the Streptococcus inhibited bacterial interactions with the blood-brain barrier, reducing mortality rates up to 90 percent in...

Oil spills and climate change double the mortality rate of British seabirds

...ember issue of Ecology Letters also shows a direct link between a warmer climate in the North Atlantic and a higher mortality rate among British guillemots. Professor Birkhead's long-term guillemot study has been carried out on Skomer Island, Wales, since 1972. The length of the ongoing study has allo...

Lethal needle blight epidemic may be related to climate change

...ution. The increase in precipitation had no clear link to a known climatic oscillation that might have explained it, and the authors conclude that it is most likely related to a directional climate trend. The report of Woods et al. appears to represent one of a growing number of examples of an indirect e...

DNA self-assembly used to mass-produce patterned nanostructures

...procal bases. Tiles with complementary sticky ends link together when mixed. The structure of the tiles created the molecular equivalent of puzzle pieces that would self-assemble only in a specific arrangement when mixed together, with the DNA loop loaded with a desired "cargo" molecule that would form t...

Polymer gel can block toxic leakage problem in gene therapy

...e route for large numbers of viruses so those will link up with and infect tumor cells instead, Yuan said. The Duke team found the polymer-virus mixture "could reduce virus dissemination by two orders of magnitude (100 times) and significantly increase transgene expression in solid tumors," their study r...

Scientists move forward understanding of schizophrenia

...nia or bipolar affective disorder. The new genetic link we have made to PDE4B and how that links back to D...the Edinburgh and Merck groups in finding this new link between the gene coding for PDE4B and schizophrenia. This new research has the potential for develop...

Envisat radar surveillance protects endangered prehistoric fish

...sel is then sent with its position via a satellite link to the French authorities on Réunion, where they are analysed to identify legal and illegal vessels. "Authorised vessels are mandated to have an Argos satellite transmitter aboard, so they can be located and identified. Vessel positions are sent t...

Missing fossil link 'Dallasaurus' found

...exas in Austin. Dallasaurus represents a missing link in the evolution of a group of creatures called mo... fin-bearing forms. Dallasaurus represents a clear link to one lineage of the later forms and the first time researchers can clearly show mosasaurs evolved ...

Neurons generated in the adult brain learn to respond to novel stimuli

...d, there is always a group of new cells waiting to link up with new stimuli," Macklis says. "We're also seeing how the environment can alter adult-born neurons and how experience and activity are important for making sure new cells integrate properly." An associate professor of Surgery at Harvard Medical...

Researchers show how air pollution can cause heart disease

...cember 21 issue of JAMA. "We established a causal link between air pollution and atherosclerosis," says Lung Chi Chen, Ph.D., Associate Professor of Environmental Medicine at NYU School of Medicine and a lead author of the study. Atherosclerosis--the hardening, narrowing, and clogging of the arteries--is...

Looking for the genes that affect a person's level of response to alcohol

..., because prior research had indicated a potential link between this section of this chromosome and a person's alcohol response. "Researchers in San Francisco had previously carried out some research on worms," explained Schuckit, "finding that those worms with a mutation in that gene were fairly insens...

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