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Tag: "under" at biology news

New science of metagenomics 'will transform modern microbiology'

...s that could be grown in a laboratory and examined under a microscope, but most of the life-supporting activities of microbes are carried out by complex communities of microorganisms, and many cannot be grown in laboratory culture. Metagenomics will transform modern microbiology by giving scientists the t...

'Hidden-hero' microbes in soil, water may help naturally clean toxic sites

Buried under 243 acres in an East Tennessee valley adjacent to the Oak Ridge National Laboratory's Y-12 National Security Complex, toxic waste from weapons manufacturing at the facility between 1951 and 1983 leaches into groundwater that extends in radioactive pl...

Colour sensor breath test can detect lung cancer

... accurately predict the presence of cancer in just under three out of four of those with lung cancer. The results were not affected by age, gender, or stage of disease. Other approaches to breath testing have been used, say the authors. This includes gas chromatography and mass spectrometry, which re...

Scientists reveal structure of gateways to gene control

...and which DNA building blocks they have wrapped up under their tight control," Pugh said. Among those building blocks, Pugh and his colleagues revealed the architecture of a critical gateway, controlled by the nucleosome, which must be unlocked before a gene can be transcribed. The study revealed that ...

Groundbreaking Canadian asthma study

... many other flexible endoscopy procedures, is done under light anesthesia, and the patient returns home the same day. The objective of the Asthma Intervention Research (AIR) Trial, led by Drs. Cox and Miller, as part of a global clinical trial, was to examine the effectiveness and safety of bronchial th...

Does a peptide affect the heart's response to social isolation?

...hodology Adult female prairie voles were placed under anesthesia and implanted with wireless, radio frequency transmitters. The animals were subsequently exposed to either social isolation or pairing with a female sibling (control conditions) for four weeks. They were treated with oxytocin or saline (co...

When smell cells fail they call in stem cell reserves

...he brain to the outside world, olfactory cells are under constant assault from harsh chemicals that one mig...The team then went back and looked at nerve repair under less damaging circumstances where only the olfactory nerve cells are killed. In this situation, the ...

Music genes and musical geniuses

Music under the microscope: the relation between biology and genetics and human music, its peculiarities and reasons. These are the main themes of the International Workshop on the Biology and Genetics of Music, to be held in Bologna, May 20 to 22, with leading ...

Breathing easy: When it comes to oxygen, a bug's life is full of it

... ability of its nerve cells to remain healthy even under hypoxic conditions. The research aims to lead to better ways to protect humans who suffer periods of hypoxia due to medical emergency or accidents. Mark Krasnow, of the Stanford University School of Medicine, Palo Alto, California, will speak on “...

New UD technology removes viruses from drinking water

...ogenic microorganisms in the new Ground Water Rule under the Environmental Protection Agency's Safe Drinkin...ss of iron granules in removing viruses from water under continuous flow conditions and over extended periods. Two bacteriophages--viruses that infect bacter...

MIT bioengineer advances survival, promise of adult stem cells

...e following transplant may limit survival of cells under many clinical conditions. To avoid that deadly response, Griffith and her team sought a way to manipulate the environment surrounding the cells to make conditions more favorable for survival. They zeroed in on a growth factor known as EGF, which p...

Widely used hepatitis B drug spurs HIV drug resistance

...stol-Myers Squibb, which makes and sells entecavir under the brand name Baraclude. "The alert should go out to co-infected people to consult with their physicians immediately about entecavir to see if it is the right drug to treat their hepatitis B in the first place and to evaluate alternative therapi...

Faster, low cost sequencing technologies needed to drive era of personalized medicine

...borator Jian Gu have been awarded a $897,000 grant under this program for an ambitious DNA sequencing project that combines physics, chemistry and nanotechnology with engineering. The researchers have been charged with the daunting task of shrinking down the 13 year, $2.7 billion Human Genome Project to d...

The great escape -- fleeing fish fall in line

...Our work is the first to show that fish maintained under the same conditions, with no differential treatment, show a tendency for keeping a relatively fixed chronological order of escape. This implies that in a given school certain individuals may have a greater influence on the escape strategies of the w...

Nonvenomous Asian snakes 'borrow' defensive poison from toxic toads

...e toxins from the toads in their neck glands. When under attack, the snakes re-release the poisons from these neck glands. Many invertebrates sequester dietary toxins for use in defense, including milkweed insects and sea slugs. But vertebrate examples of toxin sequestration, especially from vertebrate ...

Salmonella survives better in stomach due to altered DNA

...genetic characteristics was studied. This happened under different conditions such as in a hot, acid or oxy...e survival characteristics were found to be active under all conditions, whereas the pathogenic characteristics were only active under a few of the condition...

Endangered shortnose sturgeon saved in Hudson River

...pecies and subspecies and a total of 1,311 species under the U.S. Endangered Species Act. "Endangered and threatened U.S. fish outnumber mammals, reptiles, birds, etcetera," said Bain. Since 1966 when the federal government started identifying threatened species, only 16, including the American alligator...

How does your brain tell time?

...y to judge the interval between two auditory tones under a variety of different conditions. The researchers found that volunteers?sense of timing was impaired when the interval was randomly preceded by a "distracter" tone. "Our results suggest that the timing mechanisms that underlie our ability to reco...

Researchers show that veins stiffen as we age

..., and graphed. The consistently lower blood volume under pressure pointed to the less springy veins of the ...dgrip. They also administered a nitroglycerin pill under the tongue of each participant to relax the veins. In each case, they found that the tests had no ef...

A potential biological cause for sudden infant death syndrome

..., serotonin abnormalities help explain why infants under 6 months are most vulnerable to SIDS. At birth, babies must adjust from being totally dependent on their mother to breathing on their own and maintaining their own blood pressure. If the brainstem serotonin system is defective or still immature, thi...

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