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Tag: "samples" at biology news

Toasty oat aroma influenced by presence of health-linked polyphenols

...hey boosted the level of polyphenols in one of the samples by an amount that can be found in nature and then ...hey boosted the level of polyphenols in one of the samples by an amount that can be found in nature and then roasted both samples. The sample that had the add...

Chemical compound inhibits tumor growth, size in new mouse study

...hey boosted the level of polyphenols in one of the samples by an amount that can be found in nature and then ...hey boosted the level of polyphenols in one of the samples by an amount that can be found in nature and then roasted both samples. The sample that had the add...

'Acid rain' and forest mass: Another perspective

...in two oak woods (the second). To this end, weekly samples of rain, transcolation (fraction of the precipitat...ed using proportions of the various cohorts of the samples of green branches and litterfall. The total nitrogen deposition was greater that that deemed to be ...

Seaweed yields new compounds with pharmaceutical potential

...rom about 200 marine plant and invertebrate animal samples they collected from the Fijian coral reef in June ...nek, and their colleagues collected baseball-sized samples of reef species that exhibit unusual growth and/or behavioral phenomena. Among their collection were...

Geoscientists follow arsenic from chicken feed to streambeds

...aquifer sediments, a surprising finding from water samples from streams receiving runoff is that low concentrations of arsenic are transported to streambeds instead of being retained by the aquifers, Schreiber said. "We think that the arsenic is adsorbed onto nanoscale particles that pass though our filters ...

New class of antibiotics effective against drug-resistant bacteria discovered in fungi

...aquifer sediments, a surprising finding from water samples from streams receiving runoff is that low concentrations of arsenic are transported to streambeds instead of being retained by the aquifers, Schreiber said. "We think that the arsenic is adsorbed onto nanoscale particles that pass though our filters ...

Male elephants woo females with precise chemistry

...le message." The research team analyzed secretion samples from six male elephants and found that the pheromone is first detectable in the late teens, with the quantity secreted rising about 15-fold over a 25-year life span. Young males secreted significantly more of the "plus" frontalin than "minus," but th...

Deep treasure to be found in Oculina Bank

... A final goal for the cruise will be to collect samples of Oculina coral whose genetics will be analyzed back on land and compared against that of Oculina found in shallow water, which is much more common. The purpose will be to determine if the deepwater version is a distinct species. This information is...

Role of microRNA identified in thyroid cancer

...s at Ohio State, He and other researchers examined samples of malignant tissue from 15 patients diagnosed with PTC and compared them with normal appearing tissue adjacent to the tumors. They found 23 miRNAs that were significantly altered in the cancerous tissue when compared with the normal samples, with ...

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

...iates say. The researchers obtained 38 floodwater samples from widespread sections of New Orleans, primarily...e to nine days after flooding occurred. Additional samples were also obtained from the 17th Street drainage canal, after pumping of the floodwater began, to ev...

Max Planck researchers make a breakthrough in plant stem cell research

... reason for earlier observations, that Arabidopsis samples with defective WUSCHEL genes only develop very small meristems, and have trouble growing. The researchers in Tübingen have now discovered the same effect in mutants whose ARR7 gene is constitutively active. Cytokinin can only have its full growth-p...

Ancient trans-Atlantic swarm brought locusts to the New World

...lling from Africa to the Caribbean. Using muscle samples taken from the powerful hind legs of locusts, Lovejoy and his colleagues used mitochondrial DNA sequences to reconstruct the evolutionary history of the Schistocerca locusts. The team found that the desert locust lineage gave rise to the more than 50...

Same-sex mating by fungi spawned infection outbreak, evidence suggests

...anned the genomes of the Vancouver Island fungi to samples collected from around the world, the team traced the rarer type to identical isolates in Australia. The major form matched a sample taken from an infected person in Seattle 30 years ago and another collected from a Eucalyptus tree in San Francisco in...

Mining biotech's data mother lode

...t interests them. Microarrays process thousands of samples to discover what genes are over expressing. These over-expressing genes ?numbering sometimes in their thousands, too ?create proteins. The researchers then need to discover what protein interactions are taking place among all the different proteins c...

Bare metal stents deliver gene therapy to heart vessels with less inflammation in animal studies

...adenovirus successfully delivered genes from alloy samples to animal arterial smooth muscle cells. In a second experiment using rodents, the researchers detected gene expression with significantly lower restenosis in the carotid arteries of animals with the experimental stents, compared to control animals wi...

Compound from marine bacteria shows potential as multiple myeloma therapy

...rine gram-positive bacteria identified in sediment samples from the ocean floor. The substance has shown strong anticancer properties in laboratory tests. Nereus Pharmaceuticals holds an exclusive license to the compound for drug development. Experiments with NPI-0052 began at Dana-Farber in 2003, said D...

Free-energy theory borne out in large-scale protein folding

...e, Wittung-Stafshede, Matthews and Wilson prepared samples of MLAc and added urea to cause them to unfold. The team then injected water into the solution very fast, diluting the mixture and causing the proteins to fold. Using spectroscopy, they captured fluorescence and ultraviolet polarization patterns give...

Looking for the genes that affect a person's level of response to alcohol

...n addition, all of the participants supplied blood samples that were used to look for linkages of their LR characteristic to selected chromosomal regions. Results indicate that an area on chromosome 10 is potentially linked to LR, in particular, the KCNMA1 gene. These results are particularly interesting, ...

Finding rewrites the evolutionary history of the origin of potatoes

...potentially useful," Spooner says. "We can screen samples to see if related germplasm has similar resistance, in which case we may be able to guide plant breeders to germplasm to use in breeding programs." And beyond the agricultural benefits, Spooner's study has helped to rewrite a small but important cha...

Microarray technology for tailoring breast cancer therapy

...ancer Research, researchers analysed tumour tissue samples and identified a group of64 genes that can be used...patients using DNA microarray analysis. From these samples they identified the genetic signatures shown by 38 patients who had a poor prognosis - defined as re...

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