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Tag: "plus" at biology news

Shade trees getting 'scorched' by plant disease

...tral New Jersey communities. Current loss of value plus replacement costs for older trees affected by this disease is estimated at $8,000 per tree. Landowners and tree care professionals in these locations must plan for the loss of property values and high costs of replacement as shade trees in landscapes...

Biotech cotton 8: Bugs 0

... insecticides." Dennehy added, "These soft toxins plus the good bugs acting together have driven pesticide use to historic low levels ... this is a wonderful success of integrated pest management." Since widespread adoption of Bt cotton in 1997, insecticide use on Arizona's cotton crops is down 60 perce...

Male elephants woo females with precise chemistry

... when the ratio became balanced - equal amounts of plus and minus frontalin - males of all ages, as well as luteal-phase and pregnant females, were repulsed. Only ovulating females were attracted. The study's results indicate that the ratio of frontalin enantiomers allows other elephants to distinguish ...

Newly discovered birdlike dinosaur is oldest raptor ever found in South America

...na, composed of the southern hemisphere continents plus India, drifted to the south. Until recently, dromaeosaurs (swift-running, bi-pedal, birdlike dinosaurs) have been found only in Cretaceous rocks of Asia and North America, northern continents that were part of Laurasia. (Laurasian dromaeosaurs incl...

Double trouble: Cells with duplicate genomes can trigger tumors

...a "diploid" set of chromosomes ? that is, 22 pairs plus an "X" and "Y" chromosome in males and two "X" chr...somes in female. Tetraploid cells contain 44 pairs plus the sex chromosomes. "Our experiments test an idea that's been percolating along among cell biologi...

Science's Breakthrough of the Year: Watching evolution in action

...nges to this fundamental concept. This milestone, plus nine other research advances, make up Science 's list of the top ten scientific developments in 2005, chosen for their profound implications for society and the advancement of science. Science 's Top Ten list appears in the 23 December 2005 issue o...

Did feathered dinosaurs exist?

...ssible solution to the disparate data is that Aves plus birdlike maniraptoran theropods (e.g., microraptors and others) may be a separate clade, distinctive from the main lineage of Theropoda, a remnant of early avian radiation, exhibiting all stages of flight and flightlessness." ...

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

...Over-exploitation risks exhaustion of groundwater, plus loss of artesian pressure 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-deri...

New nanosensor uses quantum dots to detect DNA

...osensor, the researchers mixed the two DNA probes, plus a quantum dot, in a lab dish containing the DNA they were trying to detect. Then nature took its course. First, the two DNA probes linked up to the target DNA strand, holding it in a sandwich-like embrace. Then the biotin on one of the probes caused ...

Genetic key to growth of new arteries is identified

...scribed previously unknown areas of the MMP2 gene, plus other molecules that activate those areas, that are essential to expression of the gene in response to decreased blood flow. "It's a very time-consuming approach, but a very elegant way to deal with the problem," comments Sarkar. "This paper is a v...

Infants can organise visual information at just four months

...arly enough stage. Now diagnosis is often earlier, plus there is a genetic test ?but interventions are still something for the future. "If we can find out about cognitive development from infancy onwards in today's Williams syndrome children, the next generation will benefit from this", she predicts. ...

High-tech tags on marine animals yield valuable data for biologists and oceanographers

...iaturization of electronic components and sensors, plus advances in satellite technology, have led to dramatic improvements in the tags. Recent innovations developed at SMRU have greatly improved the ability to pinpoint an animal's geographic location, and researchers are adding new capabilities to the ta...

Cancer cells suppress large regions of DNA by a reversible process that can be tackled

...method to scan the entire complement of the 30 000 plus genes ?the entire genome ?in the cancer tissue samples, which allowed widespread changes to be identified in specific parts of the genome. They were amazed to find the extent of gene silencing. Assoc. Professor Clark adds: "What we want to do now is...

U-M scientists identify major psoriasis susceptibility gene

...people must inherit several disease-related genes, plus be exposed to one or more environmental triggers, in order to get psoriasis. "For every individual with psoriasis who carries the PSORS1 gene, there are 10 other people with the gene who don't get psoriasis," says study director James T. Elder, M.D....

New method for identifying microbes

... identifier genes common to all microbial species, plus enough unique genetic information to tell the microbes apart. In one example, the scientists cut and splice pieces of DNA to produce "tags" that contain 16 "letters" of genetic code somewhat "upstream" from the beginning of the gene that codes for a...

Pesticides in the nation's streams and ground water

...Pacific Northwest and including Hawaii and Alaska, plus a regional study in the High Plains aquifer system. Although none of the USGS stream sampling sites were located at drinking-water intakes, a screening-level assessment was done by USGS to provide an initial perspective on the relevance of the pesti...

MIT researchers build tiny batteries with viruses

...tein coats that collect molecules of cobalt oxide, plus gold. The viruses then align themselves on the polymer surface to form ultrathin wires. Each virus, and thus the wire, is only 6 nanometers (6 billionths of a meter) in diameter, and 880 nanometers in length. "We can make them in larger diameters," ...

Markers of gene, protein, or micro-RNA activity predict outcome in prostate and colorectal cancers

...hers tested a total of six genetic markers - PITX2 plus five other methylated genes that were identified in tumor tissue taken from patients who recurred shortly after surgery. Hypermethylation of all six markers correlated with poor survival, but using PITX2 alone, the researchers found they could develo...

AIDS-related cognitive impairment exists in two separate forms

...hers tested a total of six genetic markers - PITX2 plus five other methylated genes that were identified in tumor tissue taken from patients who recurred shortly after surgery. Hypermethylation of all six markers correlated with poor survival, but using PITX2 alone, the researchers found they could develo...

New genetic test for breast cancer

...standard treatment is surgery to remove the tumor, plus radiation and hormonal therapy, which cures about ...e is more than 25, women will receive chemotherapy plus hormonal therapy, the current standard of care. If it is less than 11, they will receive hormonal t...

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