Tag: "contamination" at biology news

New human retrovirus originated in mice

...ependently acquired and are not the result of some contamination of the samples," he said. Ganem cautioned that any link between XMRV and prostate cancer is tenuous at best. "First, the genetic variant we studied occurs in familial clusters that constitute only a very small sliver of prostate cancers," he said. "...

Vegetables inhibit growth of prostate cancer in mice with human tumors

...n albatrosses indicate regional differences in the contamination of North Pacific waters, said Myra Finkelstein, a postdoctoral researcher at the University of California, Santa Cruz, who led the study. "The black-footed albatrosses forage mostly in the California Current, whereas the Laysan albatrosses forage a...

Albatross study shows regional differences in ocean contamination

...n albatrosses indicate regional differences in the contamination of North Pacific waters, said Myra Finkelstein, a postdoctoral researcher at the University of California, Santa Cruz, who led the study. "The black-footed albatrosses forage mostly in the California Current, whereas the Laysan albatrosses forage a...

New method for identifying microbes

...les and identifying species useful for cleaning up contamination to identifying pathogens and distinguishing harmless bacteria from potential bioterror weapons. "Microbial communities are enormously diverse and complex, with hundreds of species per milliliter of water or thousands per gram of soil," said Brookhav...

Study may help slay 'Yellow Monster'

...among mine workers and worries about environmental contamination among people who live on that land. The Navajos b..., Woody said she was not very aware of heavy metal contamination of soil and water from a large uranium tailing pile near her hometown. But now she wonders about the...

Contaminants linked to sturgeon decline in Columbia river

...0 times higher than the fish below Bonneville. The contamination was most significant in the reservoir behind the Bonneville Dam, the oldest dam on the river. "We believe that some contaminants are accumulating behind the dams by settling out in the sediment as the water slows," Feist said, adding that at this p...

Alternatives to the use of nitrate as a fertiliser

...s given rise to environmental problems such as the contamination of water or the degradation of the ozone layer. There are also health problems such as deficiencies in the oxygenation of blood in breast-feeding mothers or the accumulation of nitrosamines, substances that are said to be cancerous, in the adult stom...

Screening blood for West Nile virus

...ests. These tests detect some but not all cases of contamination with the virus. This means that WNV infections that could result from contaminated blood products are potentially avoidable by screening donated blood. However, the majority of WNV infections are asymptomatic, so screening may have a small impact on ...

York researchers develop pollution-busting plants to clean up contaminated land

...nt are not degrading it quickly enough to stop the contamination of land and ground water. So the York team has redeployed the enzyme in the bacteria into plants, giving them the ability to biodegrade the pollutant more efficiently. Professor Bruce said: "We have taken that activity from the bacteria and put it i...

Breakthrough for stem cell research

...reakthrough eliminates the risk of animal-to-human contamination in potential stem cell therapy treatments. "This is the first hESC line produced in Australia and only the second one in the world, which does not use animals in any way. Our line grows on human fetal fibroblast feeder layer that does not requir...

Antibacterial coatings cut infection rates

... "Another significant problem caused by bacterial contamination of medical devices is bacteria that settle on contact lenses and cause inflammation and, more rarely, infections," Professor Griesser said. Researchers at The Wark TM are developing nanometre thin coatings for biomedical implants and biomedical de...

Sahara's edge studied from ground, air and space to improve water management

...e to put remaining supplies out of reach or induce contamination from nearby saline water deposits. Working with partners including African water agencies, ESA has commenced a project called Aquifer to develop satellite-derived products and services to support the sustainable management of ground water. Planned ...

Katrina floodwaters not as toxic to humans as previously thought, study says

...nd high levels of bacteria, most likely from fecal contamination resulting from sewage. Levels were within the range of typical storm-water runoff in the city, the scientists say. They also detected high levels of lead, arsenic and chromium and noted that levels of these toxic metals were also similar to those typ...

Researchers: Treated wood poses long-term threat

...treated deck for a year. Their conclusion: Arsenic contamination was 100 times higher than runoff from an untreated...hough there isn't yet much evidence of groundwater contamination in monitoring wells around those landfills, that could well become a problem, said John Schert, dire...

Pillows - a hot bed of fungal spores

... - more than a million spores per pillow. Fungal contamination of bedding was first studied in 1936, but there have been no reports in the last seventy years. For this new study, which was published online today in the scientific journal Allergy, the team studied samples from ten pillows with between 1.5 and 20...

Stem cells' electric abilities might help their safe clinical use

...nsplantation and form tumors, for instance, due to contamination by only a few undifferentiated human ESCs," says Ronald A. Li, Ph.D., an assistant professor of medicine at The Johns Hopkins University School of Medicine and senior author of the study. "Our discovery of functional ion channels, which are valves in...

Chernobyl: The true scale of the accident

...in surrounding areas, nor have we found widespread contamination that would continue to pose a substantial threat t...of the accident, have resulted from the accident's contamination and at least nine children died of thyroid cancer; however the survival rate among such cancer victi...

Researchers find Amchitka seafood safe for now

... The Physical Data Analysis of current biological contamination was linked to other studies. The group's geophysical studies present no evidence that the nuclear test materials have entered the seas there. Although its work was limited in scope, the team directed by University of Alaska's Mark Johnson did not cle...

Nanotechnology to provide portable genetic risk detection

...ly as well as proteins linked to viruses, chemical contamination in food or water pollution. "There are a broad variety of applications for this system, although the main market is in biomedicine," explains OPTONANOGEN coordinator Laura Lechuga at the National Microelectronics Centre (CNM) in Spain. "Though comme...

Hurricane aftermath: Infectious disease threats from common, not exotic, diseases

...r after natural disasters and can be caused sewage contamination of the water. Although at high levels in floodwat...Orleans is the type commonly associated with fecal contamination and is not the E. coli H7:O157 strain that can cause serious kidney disease and bloody diarrhea. "A...

1 2 3