Tag: "samples" at biology news

HIV Therapy Greatly Extends Life of Key T Cells, Scientists Find

...he DNA of actively dividing cells. By taking blood samples in weeks and months following the deuterium infusion and measuring the amount of deuterium remaining in the CD4+ T cell DNA at each time point, the researchers could count how many new cells were made and how long they lived. The scientists found a ...

Tagging pathogens with synthetic DNA 'barcodes'

...d. The researchers have tested their system using samples containing various combinations of E. coli, anthra...several ways. One is in a flow cytometer, in which samples move rapidly past a window where a computer reads the color codes of individual beads. Another is by...

A novel method to measure circadian cycles

...suprachiasmatic nucleus. The researchers took skin samples from humans and infected subsequently made tissue cultures with a virus engineered to report with a fluorescent signal when a certain host circadian rhythm gene was expressed. They found that their data jibed with the previously accepted length of t...

Bird samples from Mongolia confirmed as H5N1 avian flu

...ntified the pathogenic form of avian flu--H5N1--in samples taken from birds last week in Mongolia by field ve...Communicable Diseases with Natural Foci--collected samples from hundreds of wild birds, both live and dead including, ruddy shelduck, herring gull, black-heade...

Primate virus jumps species barrier to humans for first time in Asia

...ngel. For this study, the researchers tested blood samples from 82 people who work in or around a temple in Bali, as well as samples from macaques in the area. They found antibodies for simian foamy virus in the blood of one 47-year-...

Marine bacterium suspected to play role in global carbon and nitrogen cycles

...ater and soil. Subsequent efforts to grow various samples of these organisms led to this cultivation of N. maritimus, or "dwarf belonging to the sea," by Stahl and scientists at the Woods Hole Oceanographic Institution. They report their work in the Sept. 22 issue of the journal Nature. As the true rang...

Otter adaptations: How do otters remain sleek and warm

...in Lake Superior, Michigan, he also collected hair samples from the island's mammals--including wolves, moose... telemetry of radio-collared wolves and collecting samples of their scat for DNA analysis. "I discovered that it can be very enjoyable and stimulating to expa...

Genome Sequence for Haemophilus Influenzae Completed

...in Lake Superior, Michigan, he also collected hair samples from the island's mammals--including wolves, moose... telemetry of radio-collared wolves and collecting samples of their scat for DNA analysis. "I discovered that it can be very enjoyable and stimulating to expa...

Researchers identify genes associated with lung transplant rejection

...hey and his fellow researchers studied lung biopsy samples from 22 lung transplant patients, with the goal of...eds of gene products simultaneously in lung tissue samples only a few millimeters across. "That was our first achievement: being able to accurately measure tha...

U-M researchers identify new blood test for prostate cancer

... Journal of Medicine. Researchers looked at blood samples taken from 331 prostate cancer patients prior to s...th no history of cancer. They began by testing the samples against a library of 2,300 bacteriophage, organisms that express proteins on their surface, and were...

Genetics links whale to two different ocean basins

...ale between ocean basins." The study examined DNA samples extracted from skin biopsies collected from whales in the wintering grounds of both the Indian and South Atlantic Oceans for evidence of inter-oceanic exchange of individuals. Using a method of genetic capture-recapture of genotypes constructed of mi...

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

...Society for Microbiology. "Bacteria found 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 spark...

New tools used to control foodborne hepatitis A outbreaks related to green onions

...enetic sequencing analysis of virus found in blood samples from infected individuals, have greatly improved understanding of outbreaks of other foodborne pathogens, but are time-consuming and not widely available. In September 2003, Tennessee, North Carolina, and Georgia reported a total of 422 cases of fo...

Use of Antibiotics for Acne May Increase Risk of Common Illness

...enetic sequencing analysis of virus found in blood samples from infected individuals, have greatly improved understanding of outbreaks of other foodborne pathogens, but are time-consuming and not widely available. In September 2003, Tennessee, North Carolina, and Georgia reported a total of 422 cases of fo...

Large-scale Computer Simulations Reveal New Insights Into Antibiotic Resistance

...enetic sequencing analysis of virus found in blood samples from infected individuals, have greatly improved understanding of outbreaks of other foodborne pathogens, but are time-consuming and not widely available. In September 2003, Tennessee, North Carolina, and Georgia reported a total of 422 cases of fo...

Disrupting Cocaine-memories To Battle Addiction

...enetic sequencing analysis of virus found in blood samples from infected individuals, have greatly improved understanding of outbreaks of other foodborne pathogens, but are time-consuming and not widely available. In September 2003, Tennessee, North Carolina, and Georgia reported a total of 422 cases of fo...

Ancient DNA confirms single origin of Malagasy primates

...nability to obtain DNA from some species. The only samples to yield DNA from tropical localities were the two individuals that were used as positive controls, Yoder said. "The results of our study contribute to the mountain evidence that suggests that prospects for ancient DNA studies from the tropics are l...

World-first technology enables study of ancient bacteria

...mber to enable scientists to take precise sediment samples and grow bacteria from them at pressures as high as 1,000 atmospheres. A special ram for the system was produced by the Technical University, Berlin. As well as studying potentially the deepest organisms on Earth this research might also throw light...

Researchers find how some antibiotics kill bacteria

...hat represent each structural class. They obtained samples of the antibiotics in their respective crystal structure form. Crystal structures are sets of atoms arranged in ways that are unique to a particular substance. The researchers used a technique called X-ray crystallography to determine where individu...

WCS says avian flu prevention should focus on farms, markets

... ground in Mongolia's Kovsgol province, collecting samples from wild birds that have recently contracted the ...golia immediately went to the site to collect more samples that will be sent to the United States Department of Agriculture for further testing to determine th...

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