Tag: "standard" at biology news

Newly created cancer stem cells could aid breast cancer research

... cancer cell by inserting specific genes through a standard procedure. The engineered cells proved to be ext...gh tumor-making and metastatic potential while the standard culture medium favors cells with low tumor-making potential. Although the two types are only slightl...

OHSU turns mouse into factory for human liver cells

...l Nature Biotechnology, could soon become the gold standard not only for examining drug metabolism in the liver, which helps scientists determine a drug's toxicity. But it also can be used as a platform for testing new therapies against infectious diseases that attack the liver, such as hepatitis C and malari...

Evolution is driven by gene regulation

...-coding regions, making them harder to identify by standard computer comparisons. While many molecules that bind DNA regulatory regions have been identified as transcription factors mediating gene regulation, we have now shown that we can functionally map these interactions and identify the specific targete...

Carnegie Mellon's Peter Adams receives EPA research grant

...e in areas that violate the federal standard. That standard was strengthened in September after scientists, ar...and heart, advised the EPA that the previous daily standard of 65 micrograms per cubic meter of air was too loose. Adams will also base his particulate matter...

Grapes, soy and kudzu blunt some menopausal side effects

...ure (hypertension) and diabetes. A decade ago, the standard treatment for these problems was long-term hormone replacement therapy (HRT). Since then, studies have shown that extensive use of HRT is associated with significant adverse effects. As a result, alternatives have been sought. Certain naturally occur...

Experiment suggests limitations to carbon dioxide 'tree banking'

...d that elevated CO2 caused any deviation from this standard relationship," said McCarthy, now a postdoctoral fellow at the University of California, Irvine. Also unchanged by the CO2 enrichment were the proportions of carbon atoms that found their way to various components of plant systems -- wood, leaves, ...

American Chemical Society's Weekly PressPac -- Aug. 1, 2007

...xplains that animal testing long has been the gold standard for environmental toxicology. But such tests take years to complete, cant always be confidently extrapolated to humans, and require the use of laboratory animals. As a result, only a handful of commercial chemicals have gone through the complete b...

Story tips from the US Department of Energy's Oak Ridge National Laboratory, August 2007

...of a popular biomolecular simulation package using standard programming languages on a system offered by SRC Computers. While field-programmable gate arrays, which are a different type of logic chip than traditional microprocessors, are traditionally used for other purposes -- such as signal processing -- the...

Improved NIST SRM aids lead poisoning detection

...he lowest lead concentration level in the previous standard was 4 micrograms per deciliter or 40 parts per billion. In contrast, the lowest lead concentration level of SRM 955c is 0.4 microgram per deciliter or four parts per billion, the level of lead in an undosed animal. It is intended to represent the nat...

UC experts detail new standard for cleaner transportation fuels

... well as nationally and internationally. The new standard was commissioned in January by California Gov. Arn...itys top transportation-energy experts to design a standard that would reduce carbon emissions from fuels by 10 percent by 2020. Carbon and other greenhouse gas...

Phase II study of therapeutic vaccine shows efficacy in patients with metastatic colorectal cancer

...Ankara-encoding 5T4 (TroVax), when used alongside standard chemotherapy. The research was funded by Oxford B... study shows that TroVax could be complementary to standard chemotherapy, enhancing the immune response to tumors. The target of this immuno-therapy approach...

Einstein researchers' prototype vaccine could provide improved protection against tuberculosis

...ctive immunity that was measurably superior to the standard BCG vaccine, says Dr. Steven Porcelli, professor of medicine (rheumatology) and microbiology & immunology at Einstein and the papers other senior author. Two months after vaccination, significantly fewer bacteria persisted in the tissues of secA2 mut...

Aggressive therapy best for certain AML patients

...ts responded poorly following treatment with older standard therapies, often relapsing within a year. Of AML patients with normal chromosomes who lack the mutation, on the other hand, four in 10 are cured. The new study suggests that treating patients who have the mutation with an aggressive therapy such a...

The inside dope

...maybe even more environmentally friendly, than the standard ones that are available today.'...

Boston Univeristy bioengineers devise 'dimmer swith' to regulate gene expression in mammal cells

...al systems can be built by arranging components or standard parts, as an electrician would to build an electric light switch. Much work in the field to date uses bacteria or yeast, but the Boston University team used more complex mammalian cells, from hamsters and mice. The switch has several new design featu...

Additional mammogram readers improve breast cancer detection

...hether adding readings by two technologists to the standard examination by two radiologists would improve cancer detection rates and the accuracy of the readings. The breast cancer detection rate increased 6.8% (from 5.27 to 5.63 cancers per 1,000 women screened) when the mammograms were read by two techno...

Scientists discover new way to study nanostructures

...irmed by an immense number of experiments, and the standard volt is now defined in terms of the frequency of the Josephson AC current. The Josephson effect has numerous applications in physics, computing and sensing technologies. It can be used for ultra high sensitive detection of electromagnetic radiation, ...

CTRC enrolls first patients in novel phase II study for sarcoma -- living virus destroys cancer cell

... physician to be unresponsive to or untreatable by standard therapies. These include patients with osteosarcoma, Ewing sarcoma family tumors, malignant fibrous histiocytoma, synovial sarcoma, fibrosarcoma and leiomyosarcoma. The second patient to enroll in the study was diagnosed with breast cancer in Apr...

Measuring the unseeable: Penn researchers probe proteins' dark energy

... proteins affects their function and overturns the standard view of protein structure-function relationships, suggesting why rational drug design has been so difficult. The situation is akin to the discussion in astrophysics in which theoreticians predict that there is dark matter, or energy, that no one h...

Bird sized airplane to fly like a swift

...birds in terms of performance and efficiency. In a standard civil aircraft, the wings are held a fixed position with respect to the fuselage during the full length of the flight. This is inefficient because flight conditions change in different flight phases. With their variable wings, birds can easily deal w...

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