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Tag: "upon" at biology news

Customized gene chip provides rapid detection of genetic changes in children's cancer

...ain tightly ordered selections of genetic material upon which sample material can be tested. When DNA bases from a sample bind to complementary sequences on the microarray, they cause fluorescent tags to shine under laser light. This is a signal that a particular gene variation is present in the sample. ...

Researcher says flu responders can learn from 1918 epidemic

...s, and had sound public health policies based more upon science than politics. I'm not sure that's the case today." Higgins' research has been done under the guidance of three Lehigh history professors: Roger Simon, John Pettegrew and John Smith, as well Dan Wilson, professor of history at Muhlenberg Co...

Researchers use brain scans to predict behavior

...just that: to figure out a formula or a rule based upon which it could predict whether a hint was valid and should be trusted." Researchers based this speculation on a spike in brain activity partially found in the rewards system in the frontal lobes. "The rewards system is involved in regulating behavi...

Housecat-sized Siberian tiger cubs get collared

...uccess of disease-association studies is dependent upon several characteristics of the DNA markers, including allelic frequency and genomic coverage. In some cases, a particular variant at one locus is perfectly associated with a specific variant at another locus; in other words, the two markers are "gen...

Studies on human genome variation provide insight into disease

...uccess of disease-association studies is dependent upon several characteristics of the DNA markers, including allelic frequency and genomic coverage. In some cases, a particular variant at one locus is perfectly associated with a specific variant at another locus; in other words, the two markers are "gen...

Biologist Discovers What May Be World’s ‘Pickiest?Mates

...ally eye the males, who select their burrows based upon their body size, and if they’re interested, partially or fully enter a burrow to size it up. “The burrow openings, which are circular, are just big enough for the owners to get in,?deRivera said. “Crabs enter burrows sideways so have to fit in front...

Costly breeding programs for endangered species pay off

...n incubators were altered on a 12-hour cycle based upon the high and low temperatures recorded in Houston that day. In both strategies, all breeding lines survived in captivity. In the "wild" setting, four of the inbred populations went extinct, compared to just one extinction for the MAI lines. "Appare...

A New Era Of Hope For Neglected Diseases

...ay. In the PLoS Medicine analysis, which is based upon a 100-page report financed by the Wellcome Trust, Mary Moran of the London School of Economics found that around three-quarters of these projects are conducted under the umbrella of drug development Public-Private Partnerships (PPPs). Thirteen of the...

Does manganese inhaled from the shower represent a public health threat?

...etical papers that foster the diversity and debate upon which the scientific process thrives." Everyone is exposed to small levels of manganese, which is found in food and many types of rocks and enters the air, soil and water. But, at higher levels, manganese is toxic to the central nervous system and c...

Oceans turning to acid from rise in CO2

...ion and adversely affect other organisms dependent upon corals and shellfish. The acidity could also negatively impact other calcifying organisms, such as phytoplankton and zooplankton, some of the most important players at the base of the planet's food chain. "We can predict the magnitude of the acidifi...

UW scientists report a new method to speed bird flu vaccine production

... technique reported by the Wisconsin team improves upon a previous reverse genetics method (developed by Kawaoka's group in 1999) by significantly reducing the number of plasmid vectors required to ferry viral genes into the monkey kidney cells used to produce the virus particles to make vaccines."Compare...

Studies clarify risk factors for mother-to-child transmission of hepatitis C virus

...th HCV. Taken together, the two new studies expand upon preliminary data from smaller studies of mother-to-child transmission of HCV. The larger of the two studies, conducted by the European Paediatric Hepatitis C Virus Network, involved 1,479 mother-and-child pairs enrolled at 33 centers in Italy, Spai...

Researchers find ways to turn manure into power

...r, Sweeten said. Re-sampling will begin next week upon completion of 50 days of composting of the two windrows. The analysis will be repeated on the partially-composted manure to determine changes in fuel quality produced by more than six weeks of composting, he said. Another research project involves u...

UW-Madison scientists zero in on drugs' sweet spots

...nts and marine organisms -- are the bedrock agents upon which many leading drugs are built. The ways sugar groups are organized on a molecule often dictate the agent's biological effects. "In the past, to alter the sugars attached to these drugs was very difficult," explains Thorson, of the UW-Madison Ph...

Rutgers to lead $52.7 million protein research program

...res of a wide range of protein molecules, building upon the momentum created by such groundbreaking programs as the Human Genome Project. However, the majority of the proteins coded by the genome have unknown functions and unknown structure. For the past five years, Montelione and his consortium partners...

Vaccine targets tumors where they live

...duce anti-tumor immunity and provides a foundation upon which other vaccine strategies can be contemplated for local delivery. ...

UCLA researchers identify key enzyme linked to childhood blindness

...aldehyde, related to vitamin A, which is converted upon light absorption to all trans retinaldehyde in a process called photo bleaching. This conversion is the first step in visual perception. Photo bleaching leaves the rhodopsin insensitive to light until the all trans retinaldehyde is converted, or "is...

Clearing jams in copy machinery

...ake over synthesis," O'Donnell says. Or, Pol III, upon stalling, may loosen its grip on the template and allow Pol IV to bind the primed site instead. ...

Researchers discover how malaria parasite disperses from red blood cells

...ined, the cell membrane appears to collapse inward upon itself and fragment into pieces. One previous the...wn, we didn't see the swelling." Rather, he said, upon release of the merozoites, the cell membrane appeared to contract in upon itself. Another theory he...

After the yeast is gone bacteria continue to develop flavor of sparkling wine

...nd in Cava samples could have a distinctive impact upon sparkling wine quality in terms of aroma, flavor, bubble size and bubble persistence, especially for premium quality wines," says Núria Rius, a researcher on the study. The traditional Champenoise method of sparkling wine production requires additio...

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