A Phoenix From A Ring Of Fire Is A Pattern For The Recovery Of Mount St. Helens
...basaltic ash that covers the islands. "They were jumping and flying around in all this tephra (volcanic material) seemingly unaffected by it," says Edwards. "The fact that the insects seemed to be moderately indifferent to the ash was my biggest surprise." Why the difference between the sites...Female Fireflies Lure Males For Defense Chemical
...chemical repellency was tested with two species of jumping spiders from New York and Florida. And the spiders' response to lucibufagin also was tested with fruit flies (Drosophila melanogaster). When fruit flies were treated in the laboratory with lucibufagin, spiders either left the fruit flies alone or o...Transposable Elements May Have Had A Major Role In The Evolution Of Higher Organisms
... to protectthemselves from mutations that actively jumping elements can cause," saidMcDonald. The key lies in understanding that these global-silencing mechanisms,which evolved in response to "selfish DNA," have been subsequently co-opted bythe host plant or animal cell to serve a regulatory functio...Caribbean Lizards Evolve Independently
...he rain foresthas long legs that favor running and jumping quickly; another, which lives ontwigs in the rain forest canopy, has short legs, letting it creep on the smallerdiameter living surface. These are extreme examples of the different types oflizards, and the types are called habitat specialists. ...New Gene Therapy Technique Results In Efficient Gene Delivery
...xpected. "This is really quite remarkable. I think jumping up anddown is the way you?d describe our reaction," says Young. The success may be due in part to the simplicity of the ALV system.Unlike HIV, which uses multiple receptors, ALV seems to enter cells by a singlereceptor. While the ALV receptor...Creatine Works, But Long-Term Effects Are Still Unknown
...nvolve speed and power such as cycling, sprinting, jumping andweightlifting. Athletes who benefit from creatine supplementation may be able toobtain better results because they can train more intensely. Creatine taken over a 10-12 week period and combined with resistancetraining produces increases in ...Researchers Link Gene Defects To The Course Of A Deadly Form Of Heart Disease
...Livingwith this disease means thinking twice about jumping into aswimming pool, working out, or playing sports without a "buddy"who can call 911 if trouble strikes. Though the syndrome appears to be a single disease, it's actuallythe result of one of three possible defective genes that expressthemselves in ...Jumpin' Jordan! Athletic Gene Yields Biological Clues
... to understand their form and function. The Jordan jumping gene has helped the developmental biologists disco...tdoctoral fellow in Kirk'slaboratory, isolated the jumping gene and named it based on its obviousattributes. So, just how far does Jordan jump? There is no cou......g genomic insertions isretrotransposons, so-called jumping genes. These are sequences of geneticmaterial that are capable of duplicating and randomly reinserting themselvesinto the genome. Protein-coding sequences of retrotransposons are quite similarto some bacterial sequences, so are thought to be very old......ing 3.8 percent of the total. "Rather than jumping to any conclusions about whether resistant strains of HIVare being widely spread, we need to measure the resistance in otherpopulations," says study co-author Martin Markowitz, M.D. "If it appears thatHIV resistance to drugs is becoming more common i...Molecular fats prevent nerve sheath abnormality
...trical impulses to travel down the axon rapidly by jumping from one unmyelinated region to the next. Thus, for a higher nervous system containing millions of neurons, myelin increases the speed at which electrical impulses travel down axons without having to increase axon size. "In MS, the myelin sheath...Mouse embryo hints at how mammalian body forms
... is this process that ultimately gives rise to the jumping legs of frogs, the wings of butterflies and the arms and legs of humans. And the force that directs gastrulation is "the key," says Pedersen, UCSF professor of obstetrics, gynecology and reproductive sciences, and a co-author of the study, "...Study finds elderly women can halt bone loss
...ipate in a long-term fitness regimen that includes jumping and "resistance" exercises using weighted vests can prevent significant bone loss in the hip. In some cases, the researchers say, the bone density of elderly women who participated in the OSU study actually increased. Results of the five-year stud...Can a deadly spider replace chemical pesticides?
...her viruses. "There is no instance of a toxin gene jumping from virus A to virus B," says Bruce Hammock of the University of California, Davis, who is also working on modified baculoviruses. "But if it jumped, the new virus would become less effective." Jenny Cory of the Centre for Ecology and Hydrology in ...Molecular structure suggests how a gene can "jump"
...osed the existence of what later came to be called jumping genes, scientists are getting their first clear snapshot of one caught in midair. In the July 7 issue of the journal Science, a University of Wisconsin-Madison team describes the 3-dimensional, atomic structure of an enzyme that allows a transposable...Advances in animal medicine increase quality of life for older pets
...n rising, especially after sleep; climbing stairs; jumping up into the car, or onto the bed or sofa. "Owners may attribute these problems to old age and may not seek veterinary advice, yet we have some options that may help," Fortney said. "We start with NSAIDS -- nonsteroidal anti-inflammatories. They prov...By discovering jumping DNA's role in creating our modern-day immune syste... years ago, Agrawal's research suggested, a bit of jumping genetic material, containing the RAG1 and RAG2 genes, infected an early jawed vertebrate such as...Preserving Moroccan forests need not endanger Barbary macaques
...vation decisions on sound information rather than jumping to conclusions....Study: 'Pill' may cancel some bone-building benefits of exercise
...ons of resistance exercise plus 60 minutes/week of jumping rope or a control group for 24 months. Total body, spine, femoral neck, greater trochanter, Ward's area and radial bone mineral density (BMD) and/or bone mineral content (BMC), biochemical markers of bone turnover, dietary intake of calcium, lean bod......as the first documented case of an influenza virus jumping directly from chickens to people. Public health authorities responded by ordering the slaughter of more than 1 million live poultry to prevent further spread of the virus to humans. Dr. Kawaoka and colleagues obtained samples of the H5N1 viruses tha...