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Tag: "longest" at biology news

The secret lives of whales

...he Antarctic population of minke whales is now the longest surviving whale population on earth. It was also once the largest—many times larger than other estimates. This information is critical to current discussions of the International Whaling Commission (IWC) because some argue that the recent surge in m...

In the migratory marathon, parasitized monarchs drop out early

...lometers from Canada to Central Mexico ?one of the longest migrations of any insect species. Emory University researchers found that monarchs infected with a protozoan parasite fly slower, tire out faster and expend more energy flying than healthy monarchs. These results, published in the March issue of Eco...

Sequencing of marine bacterium will help study of cell communication

...biofilm formation, and bioluminescence. One of the longest studied models of quorum sensing is the bioluminescent marine bacterium V. fischeri. "It was selected by Drs. Ruby and Greenberg to be sequenced exactly because it is so well studied," said Stevens. "This was also the first time a non-pathogenic Vib...

NIH Calls on Scientists to Speed Public Release of Research Publications

...cases will authors deem it necessary to select the longest delay period." The NIH policy will achieve several important goals, including: 1. creating a stable archive of peer-reviewed research publications resulting from NIH-funded studies to ensure the permanent preservation of these vital research fin...

Infants With Rare Genetic Disease Saved by Cord Blood Stem Cells

... cord blood survived for two to seven years -- the longest period of time they have been followed. Survival among Hurler's children who receive bone marrow is between 63 and 72 percent. ...

Infants with Rare Genetic Disease Saved By Cord Blood Stem Cells

... cord blood survived for two to seven years -- the longest period of time they have been followed. Survival among Hurler's children who receive bone marrow is between 63 and 72 percent. ...

Scientists analyze chromosomes 2 and 4

...me 1 in size. It is also home to the gene with the longest known, protein-coding sequence ?a 280,000 base pair gene that codes for a muscle protein, called titin, which is 33,000 amino acids long. One of the central goals of the effort to analyze the human genome is the identification of all genes, which ar...

Innovative coating could give medical implants a longer life

...lead investigator in the study, believes to be the longest successful in-vitro antifouling demonstration. The findings are published online today (May 13) by the Journal of the American Chemical Society, a peer-reviewed publication of the American Chemical Society, the world's largest scientific society. W...

Scientists use manufacturing methods to reconstruct mastodon

... set of 30 mastodon footprints, believed to be the longest and most complete mastodon trackway ever found, near Saline, Mich., in 1992. A 40-foot cast of the trackway is on display at the museum. "Dan Fisher is an internationally renowned scientist, but his work is very accessible; it's not something esoter...

Industrial contaminants spread by seabirds in High Arctic, new Canadian study shows

...st contaminant inputs. Noting that Canada has the longest coastline in the world, and seabirds are typically the dominant wildlife found in these coastal ecosystems, Dr. Blais says: "Most of Canada's coastline is at our northern fringe, and northern aboriginal communities rely on these ecosystems as a sourc...

Past droughts geographically widespread in the West, according to tree-ring data

...-flow events tended to cluster in time; The longest continuous period when both basins had extreme low-flow years was three years; Within any four-year period, having either high flow or low flow for two consecutive years occurred more than 20 percent of the time; For the Salt/Verde rive...

Organic farms produce same yields as conventional farms

...of the Rodale Institute Farming Systems Trial, the longest running comparison of organic vs. conventional farming in the United States. "Organic farming approaches for these crops not only use an average of 30 percent less fossil energy but also conserve more water in the soil, induce less erosion, maintain...

Gradient guides nerve growth down spinal cord

...ments and fine-motor skills. These are some of the longest cells in the body. The corticospinal neurons connect to groups of neurons along the length of spinal cord, some of which reach out of the spinal cord. They pass out of the cord between each pair of vertebrae and extend to different parts of the body,...

New technique multiplies life span in simple organisms

...terintuitive experiment has resulted in one of the longest recorded life-span extensions in any organism and opened a new door for anti-aging research in humans. Scientists have known for several years that an extra copy of the SIR2 gene can promote longevity in yeast, worms and fruit flies. That finding w...

Researchers make long DNA 'wires' for future medical and electronic devices

..., and maybe even gene repair, down the road." The longest strands are one millimeter (thousandths of a meter) long, and only one nanometer (billionths of a meter) thick. On a larger scale, positioning such a long, skinny tendril of DNA is like wielding a human hair that is ten meters (30 feet) long. Yet Lee...

HIV-infected adults in Botswana respond positively to ARV therapy public treatment program

...y extended through 2007, making it the largest and longest running adult ARV treatment research study in the region. ...

New Therapeutic Target Identified In Inherited Brain Tumor Disorder

...y extended through 2007, making it the largest and longest running adult ARV treatment research study in the region. ...

Largest computational biology simulation mimics life’s most essential nanomachine

...y extended through 2007, making it the largest and longest running adult ARV treatment research study in the region. ...

How the neuron sprouts its branches

..., it takes off and grows dynamically to become the longest dendrite." The researchers also used tracer molecu...ginates in the Golgi gets directed towards the one longest dendrite in a highly preferential way," he said. "As cargo comes out of the Golgi, it does not go ra...

Horseshoe crab decline threatens shorebird species

...n tip of Argentina to the Artic Circle ?one of the longest migrations of any bird. And each year from April to June, the red knot stops over in the Delaware Bay to feed on horseshoe crab eggs resulting from the largest spawning of horseshoe crabs found on the East Coast of the United States. Researchers fr...

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