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Tag: "expose" at biology news

Wisconsin scientists grow critical nerve cells

... to the narrow time frame, it was also critical to expose the growing stem cells to an array of complex chemical cocktails. The cocktails constitute naturally secreted chemicals - a mix of growth factors and hormones - that provide the exact growing conditions needed to steer the cells down the correct deve...

UCSB scientists probe sea floor venting to gain understanding of early life on Earth

...e frequent earthquakes. The scarps are cliffs that expose and provide access to the subseafloor, without the need for drilling, making it easier to tease out what is living at depth in oceanic crust. The fluids that emerge may come in bursts when earthquakes occur; fluid flow may therefore repeat episodical...

UF Researchers Map Bacterial Proteins That Cause Tooth Loss

... causing disease.?/p> The next step will be to expose P. gingivalis to other oral pathogens to determine what interactions may exist that contribute to infection, he said. “This study is important in that we now have an understanding of the protein expression on a global scale for this pathogen,?Lamont...

New Drugs For Bad Bugs: UF Approach Could Bolster Antibiotic Arsenal

...ous infections. In the past, microbiologists would expose bacteria to certain concentrations of an antibioti...ntists developed a system of pumps they can use to expose bacteria to changing concentrations of an antibiotic, mimicking the concentration profile present in...

Secret of smallpox's success may lead to bioterror cure

...s, if it is for a disease that you can't ethically expose people to in trial. The vaccine will go through safety studies in humans, though." Because of the importance of the research for national security, Jacob's work is on a fast-track, with the studies projected to yield a usable vaccine virus within ei...

Team Invents Device For Weighing Individual Molecules

...rating bar. Intermittently, a shutter is opened to expose the nanodevice to an atomic or molecular beam, in this case a very fine "spray" of xenon atoms or nitrogen molecules. Because the nanodevice is cooled, the molecules condense on the bar and add their mass to it, thereby lowering its frequency. In oth...

'Jumping genes' contribute to the uniqueness of individual brains

...differentiate the cells start to open up genes and expose their DNA to insertions," explains co- author Alysson R. Muotri. "What we have shown for the first time is that a single insertion can mess up gene expression and influence the function of individual cells," he adds. However, it is too early to tell...

For first time, brain cells generated in a dish

...nt from primitive states to functional neurons and expose the electrophysiological properties of the cells. A little more than a decade ago, scientists came to realize that the brain continues to produce small amounts of new cells even in adulthood, overturning the belief that people are born with a fixed ...

A novel method to measure circadian cycles

...s. The researchers point out that their method can expose differences in circadian rhythms; it does not, however, directly measure the signal from the central coordinator of circadian rhythms in the brain, the suprachiasmatic nucleus. In the future, scientists may use the new method to screen large popul...

Software 'agents' could help unmask reality of disease clusters

...idential data, and return only results that do not expose any person-identifiable details," said Dr Boulos. "The use of software agents is not a simple as it sounds, and also carries with it its own security risks, which must be properly addressed. "Mechanisms need to be introduced that, for example, digi...

Scientists develop nanotech-laser treatment that kills cancer cells without harming healthy tissue

...a time when we inject nanotubes into the tumor and expose the breast to near-infrared light," he says. This benign therapy could potentially eliminate months of debilitating chemotherapy and radiation treatment, he adds. "The laser we used is a 3-centimeter beam that's held like a flashlight," he notes. "W...

Regenerating worms help elucidate stem cell biology

...lanarian's neoblasts, which occurs when scientists expose the animal to radiation in the laboratory, is devastating. "The animal will survive on the virtue of its differentiated cells," Sánchez Alvarado said, "but as the tissues begin to turn over and there are no stem cells to replace such tissues, the ani...

Bugs expose underground carbon traffic system 10 times more important than fossil fuel burning

...ck box by getting a particular class of insects to expose the key underground carbon traffic system - by eating it. The University of Warwick team worked with researchers from Aberdeen, Lancaster and Sheffield, to try and establish if plant associated fungi - arbulscar mycorrhizal (AM) fungi - found on the...

New malaria vaccine shows promise in early clinical trial

...alaria. The straightforward way to test this is to expose the vaccinated trial participants to malaria and see if they are protected. However, this risky test is not ethical during the early stages of vaccine testing. But Druilhe and colleagues were nevertheless able to take their early trial a step furt...

Children overprescribed antibiotics for sore throat

...e the prevalence of antibiotic-resistant bacteria, expose patients to adverse drug events, and increase costs. Perhaps unique among upper respiratory tract infections, clinicians have good, objective criteria in the form of GABHS testing to guide the antibiotic treatment of children with sore throat. Limiti...

Combination therapy improves AIDS-related lymphoma outcome

... chemotherapy for ARL, oncologists are hesitant to expose HIV patients to hypothetical drug toxicities related to combining the therapies. Researchers led by Rudolf Weiss, M.D., of Specialist Practice for Hematology, Oncology and Infectious Diseases in Bremen, Germany, treated 72 HIV-patients with ARL divid...

Cholesterol gets 'thumbs up' for role in digit development

...wide-ranging actions of Sonic hedgehog promises to expose the incredible secrets of the developing embryo and could provide clues for preventing devastating birth defects. ...

Study shows hope for ridding lakes of clawed invader

... hope, says Carpenter, is that the experiment will expose a "tipping point," where the combination of trapping and pressure from predator fish pushes the rusty crayfish population to crash, with the lake ecosystem returning to its pre-rusty crayfish state. "What we are wondering is whether we will reach a...

Researchers link two more genes to sudden infant death syndrome

...n Death Genomics Laboratory. "We are continuing to expose the causes of SIDS. So far, we have now added six genes to the SIDS most-wanted list." In 2001, a team of investigators led by Dr. Ackerman identified the first cardiac gene, SCN5A, linked to SIDS. In 2005, a comprehensive search of the five channel...

New light microscope sharpens scientists' focus

...t to study with a photoactivatable probe, and then expose those molecules to a small amount of violet light. The light activates fluorescence in a small percentage of molecules, and the microscope captures an image of those that are turned on until they bleach. The process is repeated approximately 10,000 t...

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