Transgenic plants remove more selenium from polluted soil than wild plants, new tests show
... near Antioch. Selenium is considered an essential trace mineral for both humans and animals, but it becomes toxic at high doses. The dangers of selenium toxicity came to light in the 1980s when biologists discovered that irrigation drain water held at the Kesterson Reservoir in the San Joaquin Valley was ...Glow-in-the-dark zebrafish at UH hold keys to biological clocks
... clocks run fast or slow, providing the ability to trace the specific genes that create the anomaly. Putting UH a bit ahead of other institutions engaged in this type of research, Cahill and his team will be able to analyze more than 2,000 zebrafish per week. The per3-luc zebrafish is the first vertebrat...UBC prof's research challenges prevailing theory of how new species evolve
...d amplified fragment length polymorphism (AFLP) to trace a genetic gradient from one Siberian species to the other via a long chain of geographically connected populations to the south, surrounding the Tibetan Plateau. Irwin believes the findings have broad implications for current approaches to conservat...Scientists reveal molecular secrets of the malaria parasite
...enomics, proteomics and gene expression studies to trace how malaria parasites evolve on a molecular level as they move between their hosts and insect vectors. That focus on the parasites' complex life cycle is helping researchers understand when different genes switch on and off as the pathogens metamorph...Story tips from the Department of Energy's Oak Ridge National Laboratory, January 2005
...e elemental makeup based on heavy metals and other trace elements to evaluate whether the two sets of logs could have come from the same tree," Martin said. She and the University of Tennessee's Henri Grissino-Mayer concluded that the two samples matched. Had the wood come from different trees the chemical...Ocean colour satellites guide research ship through South Pacific's watery desert
...ular biology and also measuring concentrations of trace elements like iron, phosphate, nitrate and silicon to improve understand marine biogeochemical cycles in the South Pacific. The researchers also directly measured the bio-optical properties of water down to a variety of depths...Study urges caution in contaminant source tracking
..., or other efforts that are costly. The ability to trace back to the source is crucial in making sure the response actually fixes the problem." Within the last five years, state governments have begun using microbial source tracking methods with E. coli bacteria to help manage bacteria loads to streams...UT Southwestern researchers trace how virus that causes AIDS spreads following oral exposure
... Center at Dallas have utilized an animal model to trace how the virus that causes AIDS in humans may enter and spread throughout the body following an oral exposure. By innoculating monkeys with SIV, the simian version of HIV, scientists traced which tissues in the mouth and digestive tract were infected ...Computer analysis shows scientists could reconstruct the genome of the mammalian common ancestor
...ty of California, Santa Cruz. "We will be able to trace the molecular evolution of our genome over the past 75 million years. It's a very exciting new way to think about our origins, a kind of DNA-based archaeology to understand how we came to be," said Haussler, a Howard Hughes Medical Institute (HHMI) i...Studies suggest promising new directions for gallstone treatment
...y produce cholesterol gallstone disease, showed no trace of the disease." Gallstones are formed by a disruption in the normal balance of bile acids and phospholipids that are pumped from the liver into the gall bladder. Bile then becomes supersaturated with cholesterol, which is still being pumped into the...'Blind' cells see the light; maybe someday humans will, too
...al world. "We may be able to use laser scanning to trace on and off patterns on the retina and allow people to see visual patterns," Kramer said. "Sometimes I'm not sure where the science ends and the fantasy begins, but I think we can make it work." "With this technique, you also could confer light sensit......cts in the kidney or nervous system. They found no trace of GFR1 mRNA in non-Ret-expressing cells in these mice (which they named Cis-only mice, for their lack of trans signaling), while GFR1 transcripts were detected as expected in RET-positive cells, proving that the conditional expression scheme had wor...Other highlights in the November 17 JNCI
...decreased risk of colorectal cancer. Selenium is a trace element found in meats and grains, but dietary intake can vary by geographic area because of different concentrations of the element in the soil. People living in regions where selenium intake is low have higher rates of several cancers, including co...Researchers piece together the puzzle of Hailey-Hailey skin disease
...d V-shaped on the back. These lines are thought to trace the pathway of development of the ectoderm, one of the three layers of cells of the early human embryo and that which gives rise to skin and neural tissue. It has been thought that individuals with Hailey-Hailey disease possess not one, but two or...JCI table of contents, November 15 2004
...d V-shaped on the back. These lines are thought to trace the pathway of development of the ectoderm, one of the three layers of cells of the early human embryo and that which gives rise to skin and neural tissue. It has been thought that individuals with Hailey-Hailey disease possess n...Investigating the Columbia River and Estuary: A primary focus of research
...mation about the concentration and distribution of trace metals and radionuclides in the Hanford Reach of the Columbia River. Uptake and depuration of 90Sr/90Y by Columbia River periphyton communities Robert Fellows, Pacific Northwest National Laboratory, reports how periphyton communities a fundame...Darwin's greatest challenge tackled: the mystery of eye evolution
...of the retina. So how did EMBL researchers finally trace the evolution of the eye? By studying a "living fossil," Platynereis dumerilii, a marine worm that still resembles early ancestors that lived up to 600 million years ago. Arendt had seen pictures of this worm's brain taken by researcher Adriaan Dorre...Stimulating nerve cells with laser precision
...from a nerve cell. Konrad suggested using light to trace the activity, and Mahadevan-Jansen thought of using laser light to stimulate nerves and to actually generate this activity. Vanderbilt's W.M. Keck Foundation Free Electron Laser Center was the perfect facility to give it a try. The Departme...ORNL system eliminates perchlorate, helps scientists trace source
...so purifies it, allowing the scientists to isolate trace quantities and examine the compound more closely t...se of the difficulties in extracting and analyzing trace quantities of perchlorate from soil or groundwater that contain large quantities of impurities like ...Laboratory test of evolutionary theory confirms importance of links between populations
...ary interactions, identify specific mutations, and trace the genetic dynamics of the interactions through time. "It's like having a fossil record of the viruses and bacteria. I can study their genes and see how dispersal influenced their evolutionary histories," Forde said. In addition to providing general...