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Tag: "samples" at biology news

Genetic analysis of Asian elephants in India reveals some surprises

... at the Indian Institute of Science collected dung samples from nearly 300 wild Asian elephants and 30 captiv...formation existed. They then examined DNA from the samples and found that, of the distinct populations found in India, the groups that inhabit the forests in t...

Scientists sequence DNA of woolly mammoth

...ity (USA) for the investigation of permafrost bone samples from Siberia. The project also involved paleontologists from the American Museum of Natural History (USA) and researchers from Russia, the United Kingdom, France, and Germany. The researchers' report on the first genomic sequences from a woolly mam...

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

...in at sampling sites within these test areas, with samples taken to local laboratories for detailed analysis. And ESA's Envisat, ERS-2 and Proba satellites acquired images of these sites around the same time. The aim was to scale up the findings from the ground, and at the same time to use this 'ground truth...

Overfishing may drive endangered seabird to rely upon lower quality food

...rockfish. The researchers compared these historic samples with feathers they collected between 1998 and 2002 from 201 murrelets in the same region. The researchers had records of when and where all the feathers they sampled were obtained. Measures of stable carbon and nitrogen isotopes ?derived from food i...

DNA technique measures suitability of soil for onion crops

...ion crops in the Netherlands: they cause rot. Soil samples are investigated to detect this; a labour-intensiv...5. The system quickly and accurately measures soil samples at the molecular level. In a series of comparative trials, the molecular test had a higher detection...

From one cell, many possible cures

...ithin the human body. The reactor bathes stem cell samples in a protein-rich liquid while also simulating the flow of the body's circulatory system. "Within the human body, each cell is no more than 200 micrometers from a source of nutrients," Ma explained. "The perfusion bioreactor allows us to deliver ess...

UK sperm donor crisis

... problem but also disappoint patients. Testing two samples may increase acceptability rates, but a man who has variable samples may not always produce samples suitable for freezing. This will increase the number of ejaculates he...

UCLA discovery will aid in treatment of patients with a deadly brain cancer

...omising work, Mischel and his team obtained tissue samples from 33 brain cancer patients treated at another facility without knowing who the responders were. They were able to independently replicate their results, confirming that those with both genetic variations were more likely to respond to EGFR blockin...

New methods offer insight into regulatory DNA

...rom cell cultures from 60 individuals who provided samples for the HapMap. More than 630 genes were studied, of which 374 were active in the cell cultures. If gene activity in a cell culture was skewed from the average, it was investigated further. These genes were correlated with more than 750,000 SNPs ?se...

Seal rookeries could provide a reliable food source for endangered California condors, study finds

...embarked on a worldwide quest for feather and bone samples that would reveal the body chemistry of condors th...re incredibly cooperative." Among those providing samples were the Smithsonian Institution, the American Museum of Natural History, the California Academy of ...

Phenolic compounds may explain Mediterranean diet benefits

...A supplementation. Over the next four hours, blood samples were taken and the researchers used Doppler laser to measure endothelial responses to sudden changes in blood flow, which were produced by inflating and then deflating a blood pressure cuff. The response is known as ischemic reactive hyperemia. Poor ...

Young scientists turn to gel to ease side-effects of cancer treatment

...these measurements. The team has already supplied samples of the gels to the Princess Royal Hospital in Hull and hope to go into commercial production soon. ...

NIH launches comprehensive effort to explore cancer genomics

...tribution of cancerous and healthy, control tissue samples to Cancer Genome Characterization Centers and Genome Sequencing Centers. The genes and other genomic targets identified will be sequenced by the Cancer Genome Sequencing Centers using high-throughput methods similar to those employed in the Human Gen...

Mapping alcohol brain damage

...ed more than 10 drinks a day. The group analyses samples using a microarray analysis, a process they pioneered with human brain samples in 2000. From a DNA sample applied to a microscope slide, the microarray computer produces about 5...

New U. of Colorado at Boulder flu chip may help combat future epidemics, pandemics

...natures of specific influenza strains from patient samples within hours may help world health officials combat coming epidemics and pandemics. Tests last month on the new technology by the Centers for Disease Control and Prevention in Atlanta showed the CU-Boulder Flu Chip can determine the genetic make-up ...

Gene expression profile helps predict chemotherapy response in ovarian cancer patients

...study, the authors conducted microarray testing on samples from 60 ovarian cancer patients treated at BIDMC and Memorial Sloan-Kettering Cancer Center to determine if tumor tissue obtained at a patient's initial diagnosis expressed a gene profile predictive of findings at second-look surgery. (Second-look su...

Wild birds help to create human flu vaccine

...an pandemic influenza vaccineAvian influenza virus samples collected from wild birds in Mongolia by field vet...rthern mountain lakes of the country and collected samples from hundreds of wild birds, both live and dead including, ruddy shelduck, herring gull, black-heade...

Performing monkeys in Asia carry viruses that could jump species to humans

...g macaques in Jakarta, Indonesia, and tested those samples for various simian viruses. They found that about half of the macaques tested positive for simian foamy virus (SFV), a primate retrovirus that so far has not been shown to cause disease in humans, but that has been detected in other monkey-human inte...

Cheap, rapid hand-held check for HIV

... to the electrodes the team added a label to blood samples consisting of a fluorescent dye tagged to a further set of antibodies specific for CD4+ cells. They then used an electron microscope to check which cells had been captured. By counting the captured cells, the researchers devised a scale linking elect...

Argonne researchers confirm lead in Beethoven's illness

... Germany for mitochondrial DNA comparison with the samples of Beethoven's hair, owned by the Beethoven Society and also analyzed by Walsh and his colleagues at the Advanced Photon Source. The findings confirm the earlier work done on the hair samples. In addition, the researchers found no detectable levels ...

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