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Tag: "samples" at biology news

Bacteria in Household Dust May Trigger Asthma Symptoms

..., and it involved analysis of more than 2,500 dust samples from 831 homes across the U.S. Researchers at NIE...ry and Critical Care Medicine, was conducted using samples from The National Survey of Lead and Allergens in Housing (NSLAH). Two research assistants visited ...

Scientists closer to new cancer detection method

...to search within extremely complex fluid or tissue samples to pinpoint biomarkers - proteins that signal that something is amiss. "Even when the cancer biomarkers are in extremely low concentration we have been able to detect them," said Weihong Tan, Ph.D., a UF Research Foundation professor of chemistry in...

Researchers find Amchitka seafood safe for now

...ne of CRESP's challenges was to analyze biological samples for a long enough time to know what levels of radi...ESP wrestled with what it meant to have more algae samples showing plutonium from Amchitka and more fish samples showing Cesium-137 from the reference site at ...

Study hints at role of stem cell genes in testicular, breast cancers

...d that expression of the genes was elevated in two samples of seminomas (Stem Cells, March 2004). In the curr...nancy), the team had subsequently investigated two samples of seminomas, to see if the genes were expressed at elevated levels. They were, as was OCT 4. The ...

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

...ollected from around the world by analyzing tissue samples from the marine organisms and comparing them to a comprehensive catalog of species they compiled. The findings are published in the December issue of PLOS Biology. "DNA barcoding ?the ability to take a remnant of animal tissue or blood and compare...

Anthrax stops body from fighting back, study shows

...en studied once before years earlier. Using blood samples from volunteers, the researchers studied how neutrophils reacted when exposed to a purified form of anthrax lethal toxin, the part of the spore linked to the illness. Unlike an intact inhalation anthrax spore, the pure toxin is not dangerous for res...

Agricultural workers at increased risk for infection with animal flu viruses

... graduate student Kendall P. Myers, examined serum samples taken from four adult populations in Iowa between ...al pig exposure. The researchers tested the serum samples for antibodies to several then-current swine and human influenza A viruses. The results showed that...

Plant genes identified that can form basis for crops better adapted to environmental conditions

...ed micro-array technology, with which thousands of samples can be studied simultaneously. The development of capillary roots is important for sustainable agriculture Capillary root formation is controlled by both internal and external signals. This ensures that the root system adapts itself to changes in...

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

...loped a customized gene chip to rapidly scan tumor samples for specific DNA changes that offer clues to prognosis in cases of neuroblastoma, a common form of children's cancer. Rather than covering the entire genome, the microarray focuses on suspect regions of chromosomes for signs of deleted genetic materi...

Prenatal exposure to marine toxin causes lasting damage

...on the West Coast, officials there collect regular samples of affected marine animals, including razor clams and Dungeness crabs. Fisheries are closed when domoic acid levels reach 20 parts per million (ppm) in the animals' tissues, the level at which the FDA deems the toxin unsafe for human consumption. E...

New antifreeze protein found in fleas may allow longer storage of transplant organs

...em while cross-country skiing, and brought several samples into the lab. "It was serendipity," she says now. "They looked like dots of pepper sprinkled on the snow. Later we were able to collect large numbers for testing at the Queen's University Biological Station." Using a process called ice affinity pur...

Past illegal blood donation in China linked to hepatitis C virus infection

...uctured questionnaires were administered and blood samples tested for HCV antibodies. HCV rates were 8% in all participants, 28% in former plasma/blood donors, and about 3% in non-donors. Selling blood or plasma was the strongest independent predictor for HCV-positive findings. Receiving a blood transfusion ...

Retinal scans eyed for New Mexico show cattle

...d FFA exhibitors have been required to submit hair samples for DNA analysis to serve as a permanent means of ...y procedure that takes time," he said. "Also, hair samples have been lost in transit." Among the show cattle, researchers found that the retinal scans proved ...

Once-dreaded leprosy 'replaced' by tuberculosis, say researchers

... This prompted the investigators to re-examine DNA samples from other ancient sites that they and their colleagues had worked on previously. In doing so, they found leprosy and tuberculosis bacteria in remains from a 4th century CE Egyptian shrine that was known to have been visited by lepers, from a 10th ce...

Extinct giant deer's descendant found in UK

...ce in itself. Now we can analyse these ancient DNA samples from the bones of a mammal that has been extinct for over 8000 years and show that they are directly related to a living deer ?more importantly we've found its closest living descendant." ...

Study Holds Promise For New Way To Fight HIV

...ce in itself. Now we can analyse these ancient DNA samples from the bones of a mammal that has been extinct for over 8000 years and show that they are directly related to a living deer ?more importantly we've found its closest living descendant." ...

The Antarctic Ocean floor

... a quantified sample of the ocean floor. When the samples arrive on deck they are washed and classified on board in large groups or rows: sponges, corals, polyquets, molluscs, echinoderms, fish, etc. and are photographed so that their colour when alive and external anatomy can be clearly appreciated. Finall...

Study uncovers placental microtransfusions lead to transmission of AIDS virus during childbirth

...tudy involved measuring -- in umbilical cord blood samples -- a protein known as placental alkaline phosphatase as an indicator of maternal-fetal microtransfusion. "This enzyme, made in the placenta, is very big -- usually too big to pass through the natural barrier that protects babies from disease-causing...

War on terror meets war on cancer

...sing Ehleringer's method to test thousands of drug samples each year. Slight differences in the nitrogen-15-t...orists, and has been proposed as a way to use hair samples from terrorists to determine their past movements, based on isotope ratios in food and water at diff...

Pillows - a hot bed of fungal spores

...e researchers dissected both feather and synthetic samples and identified several thousand spores of fungus p...n the scientific journal Allergy, the team studied samples from ten pillows with between 1.5 and 20 years of regular use. Each pillow was found to contain a s...

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