Scientists develop method to find genetic basis for plant variation
...quitous tendency of individuals and populations to vary is termed natural variation. Evolutionary theory proposes that differences among populations can arise for evolutionarily favorable, or adaptive, reasons. If the differences between populations become great enough, they might lead to the development ...Cellular cues identified for stroke recovery
...he area where stroke occurs. While the process may vary between mice and humans, he said, it's known that neurogenesis occurs in humans. "We're hopeful that we can take advantage of the brain's plasticity," said Carmichael. "This work could lead to the development of new therapies that will promote brain ...Impulsiveness linked to activity in brain's reward center
...vels of the neurotransmitter dopamine and how they vary among individuals, Hariri says....NASA ice images aid study of Pacific walrus arctic habitats
... live on sea ice where wind-driven rills and flats vary in thickness and landscape. The dynamic nature of sea ice and its uniform appearance pose unique challenges to remote-sensing studies. In the past, researchers were literally in the dark when searching for walrus. To study the population dynamics ...Genetic map offers new tool for malaria research
...ork for connecting parasite genes with traits that vary geographically and bolster malaria's foothold in many parts of the world. "Genomic tools have largely been applied to first-world diseases up to now. This project underscores the power and importance of applying them to the devastating diseases of ...... able to determine their masses and how much these vary within a given population. Researchers in Taiwan have now used very gentle ionization techniques and a miniaturized ion trap of their own devising to accurately analyze the masses of individual, intact viruses. Previous methods for determining the ...National Allium Research Conference
...able and fruit center's director. Quercetin levels vary due to genotype, growing location and type of bulb used, he noted. Sessions during the two-day event will cover production, physiology, storage, pest management, flavor, genetics and breeding of alliums. Possible health advantages of onions and garl...Microcapsules like it hot and salty
... simple materials available in any kitchen, we can vary the properties of the wall of the microtransport system in any way we wish," said Karen Kohler, a scientist working on this project at the Max Planck Institute of Colloids and Interfaces in Potsdam. The scope for change in capsules with an original d...Genetic variation: We're more different than we thought
...st 10 percent of genes in the human population can vary in the number of copies of DNA sequences they contain--a finding that alters current thinking that the DNA of any two humans is 99.9 percent similar in content and identity. This discovery of the extent of genetic variation, by Howard Hughes Medical...Science study explains polio's tenacious grip in India
...egy," Grassly said. The obstacles to eradication vary among the endemic countries. In some areas of Afghanistan, for example, where violent conflicts are occurring, health workers must wait for negotiated cease-fires, called "days of tranquility," to reach children for vaccination....Non-steroidal anti-inflammatory drug increases liver damage in mice carrying mutant human gene
...to injury. People who have alpha-1-AT deficiency vary widely in the severity of liver injury: some patients never have liver problems while others will require a liver transplant before they are two years old. Only 10 to 20 percent of infants with alpha-1-ATZ genes will develop clinically overt liver da......how physiologically relevant environmental factors vary in space and time. We know little of how 'climate' is translated into patterns of body temperature, especially at scales important to organisms," says Helmuth. Mussel distribution and physiology is known to be negatively affected by high-temperatur...UCSD computer scientist wins Young Investigator Award, research on snake venom proteins highlighted
...) single nucleotide substitutions and genes that vary in the way their segments are sequenced provide two additional examples of genetic variability that may be picked up by protein sequencing but missed by some genome sequencing approaches. While the improved protein sequencing technique is expected ...USGS at Society of Environmental Toxicology and Chemistry
...hat combined effects of these two contaminants may vary by species and exposure amount. For more information, contact Gary Heinz at gary_heinz@usgs.gov or 301-497-5711. The SETAC presentation is on Wednesday, Nov. 8, 10 a.m., Room 511AD, Palais de Congrs. Contaminants Affect Over-Winter Survival of S......in, skeletal muscle, brain, and heart, these cells vary widely in frequency and the ability to regenerate damaged or lost tissue, they said. In most mammalian organs, progenitor cells can restore cells lost in the course of normal organ function or after minor injury but cannot regenerate after major dama...ASU researchers test antibacterial effects of healing clays
...er, as the peanut butter and jelly are termed, can vary in width and composition depending on the kinds of waters and elements present when it was formed. It is this interlayer where much of the elemental variability between clays can be found. And the interlayer surface area is huge (greater than 100 squ...Study suggests evolutionary link between diet, brain size in orangutans
...ifferences, Bornean orangs also inhabit areas that vary more ecologically than do comparative orangutan habitats on Sumatra. "The eastern parts of Borneo suffer more from El Nio-related droughts than parts of western Borneo," the scientists wrote. "The effects of El Nio on tropical rain forest composition...Researchers add to understanding of how brain cells communicate
...the effects of ions on receptors and found them to vary between different types of receptor molecules. They used computer modeling to show that variation in how ions interact with receptors combined with variation in the structure of receptors is responsible for specialization of receptor function. "Thi...Commercial fishing causes dangerous fluctuations in fish populations
...evidence that exploited species' population levels vary far more than non exploited species' in the same ecosystem. Researchers concluded that this increased variability in exploited fish stocks was most likely to be caused by the effect fishing has on the age structure of a population. Heavily-fished p...Gene linked to autism in families with more than one affected child
... MET gene, sites where letters in the genetic code vary among individuals. They tested two samples: the first, 204 families, including 26 with more than one child with autism spectrum disorders, the second, 539 families, including 452 with such multiple affected children. One marker, the C version, emerg...