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Tag: "parallel" at biology news

Escapee farmed salmon infiltrate fitter wild populations

... changes in transcription profiles that evolved in parallel between farmed strains from North America and Europe within five to seven generations." "The magnitude of the accumulated differences was of approximately 20% for 1.5% of the expressed genes in juvenile salmon. These findings provide support to the ...

Researchers develop portable 'vein finder' for faster, more accurate injections

...r and needle guide. The needle guide is positioned parallel to the sound beam being transmitted by a transducer in the device's reusable section. As medics move the device along a patient's arm or leg, the transducer emits a thin acoustical beam, about the size of pencil lead, into the reflector. Then the...

Sweet 'water taste' paradoxically predicts sweet taste inhibitors

...ings revealed that the cellular responses directly parallel the human perceptual responses. At lower concentrations, sweeteners activate the sweet taste receptor by attaching to a high affinity binding site, leading to perception of sweetness. However, high concentrations of saccharin and acesulfame-K inh...

New RNAi tools enable systematic studies of gene function

...specially effective means to meet this need." The parallel analysis of thousands of genes using RNAi allows researchers to more readily pinpoint the genes that control a biological process. Therefore, TRC developed the high-throughput techniques and quality-control measures required for such genome-scale stu...

Mining for gems in the fungal genome

...n the production of secondary metabolites. In a parallel experiment, Bok designed a fungal strain that produced extra amounts of LaeA. This time, the team searched for groups of over-active genes, which they knew were likely secondary metabolite gene clusters. The team's new approach located 40 active ...

Animal models show that anabolic steroids flip the adolescent brain's switch for aggression

...eeks of withdrawal, vasopressin levels subsided in parallel with the aggressive behavior. The anterior hypothalamus regulates aggression and social behavior. Thus, vasopressin ?already known to stimulate that area ?appears to fuel the engine of aggression. And, says Melloni, "Steroids step on the gas for a...

Cellular scale drug delivery from the inside out

...g delivery possible. The spheres have thousands of parallel channels running completely through them. Through capillary action, the spheres can soak up molecules of the drug to be delivered. When the channels are filled, the ends of channels are "capped" to safely seal the drug inside. Once the caps are in pl...

Rare Tibetan antelope listed as endangered

...ge of the moving tissue or organ. The scanner uses parallel processing to listen to echoes of each pulse in 16 directions at once. The laparoscopic ultrasound probes have so far been applied only to heart imaging, in which they may be particularly useful for monitoring heart function during minimally invasiv...

3D ultrasound device poised to advance minimally invasive surgery

...ge of the moving tissue or organ. The scanner uses parallel processing to listen to echoes of each pulse in 16 directions at once. The laparoscopic ultrasound probes have so far been applied only to heart imaging, in which they may be particularly useful for monitoring heart function during minimally invasiv...

Interactive 3-D atlas of mouse brain now available on web

...r Translational Neuroimaging. The work was done in parallel with an international collaboration, the Mouse Phenome Database (MPD) project, which was created to establish a collection of baseline phenotypic data from commonly used inbred mice. The new brain atlas database consists of 3-D anatomical data from ...

Alleged 40,000-year-old human footprints in Mexico much, much older than thought

...orm of iron oxide grains magnetized in a direction parallel to the Earth's magnetic field at the time of cooling. Because the Earth's field has repeatedly flipped throughout the planet's history, it is possible to date rock based on its magnetic polarity. Feinberg found that the rock grains in the volcanic a...

Open Source Biotechnology alliance for international agriculture

...nopolies and foster fair competition. BiOS targets parallel challenges that limit the effective use of modern life sciences in agriculture to only a few multinational corporations. "New technologies are increasingly tangled in complex webs of patent and other legal rights, and are usually tailored for wealth...

Virtual microscopy project wins educational technology award

...steps from processing to viewing of virtual slides parallel the management of aerial and satellite imagery. By modifying software from the satellite and aerial imaging industry, the researchers have developed a virtual microscopy system that allows fast web-based viewing of full resolution virtual slides. Vi...

Scientists pinpoint inflammation gene

...nflammation. For this effort, they relied on 1,500 parallel processors in the foundation's SBC Genomics Computing Center. An unparalleled resource for genetic analysis, the center enabled an otherwise too-time-consuming comprehensive analysis to eliminate scientific "guesswork" on which variants ought to be ...

Why Christmas trees are not extinct

...ate. The Plumbing System of Trees The numerous parallel "pipes" that carry water upward through the woody trunks of evergreen coniferous trees are single-celled conduits called "tracheids" and are only a few millimeters long (about one eighth of an inch). In flowering trees, the pipes are multicellular co...

Center releases new public survey on stem cells

...volve funding for research using new ESCs. In a parallel fashion, 17 percent of those who accord an embryo in a Petri dish no or low moral status nevertheless disapprove of ESC research and support the current ESC policy or an all-out ban (22 percent). Thus, even for a sizeable number of respondents who f...

New factor implicated in allergy and asthma attacks

...ldogh said. "The antigen exposure has to happen in parallel with oxidative stress, and having both components in the pollen makes that possible." These two signals play a vital role in inducing allergic inflammation. These findings suggest that antioxidant substances may be useful in forestalling allergy or ...

Researchers learn how blood vessel cells cope with their pressure-packed job

...times per minute) produced intracellular arrays of parallel "stress fibers" in a few hours. The tests were pe...ibers of endothelial cells in arteries are aligned parallel to the long axis of blood vessels, and this alignment is perpendicular to the direction of rhythmic ...

DNA size a crucial factor in genetic mutations, study finds

...y. DNA, the genetic encoder of life, comes in two parallel strands that form a double helix. It's like a long, twisted ladder where each rung consists of two molecules that form a base pair. DNA has four bases: adenosine (A), thymine (T), guanine (G) and cytosine (C). A always pairs with T, and G with C. To ...

US/African project deciphers deadly parasite genome

...R/ILRI study was published in Science along with a parallel report on the genome of the related cattle parasite T. annulata, which causes tropical theileriosis in cattle and transforms macrophages, monocytes and B-lymphocytes. That study was led by scientists at the Wellcome Trust Sanger Institute in Hinxton,...

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