'Rolling Circles' Provide New Way to Amplify and Detect DNA
...ses as its template a single piece of circular DNA far smaller than that found in eventhe tiniest of organisms. Like a molecular fishing reel, this tiny ring of DNA unfurls a long strand of daughter DNA that repeats a single sequence hundreds of times. Using molecular scissors known as restriction endon...Research Aims At Nation's First 'Smart' Ground Water Regulations
...t's shallow or deep, it doesn't matter one whit as far as the law is concerned. For the amount of agriche...h as spills or improper storage," he says. "But as far as nonpoint-source problems, we can do pretty well at reducing risk of leaching into ground water or...... their body temperaturesbegin to mysteriously drop far below normal and they enter the hibernation stateonce again. "This is an amazing process because it requires a great deal of energy.They fast for seven months, relying solely on the fat they've stored as anenergy source," Florant said...Garlic Prevents Hardening Of Aorta, New Study Shows
...148; said Boudoulas. “But the datawe have so far very strongly suggests that it prevents stiffening of theaorta.” Boudoulas said that maintaining a healthy aorta may prevent age-relateddamage to other organs. “When the pulse wave velocity is not too fast,it prevents damage to other...Gene For Inherited Syndrome Is Possible New Tumor Suppressor
...ase. "This surprised us," said de la Chapelle. "As far as we know, this is the firsttime a protein kinase gene has been identified as atumor suppressor gene." Cells have genes for many types of protein kinase enzymes, and some of theseenzymes do play a role in causing cancer. But inthose cases, cancer ri...DT104 Advice:How To Slow Salmonella Spread
...Salmonella loves standing water -- but 1997 is not far behind." Now the Cornell Veterinary Diagnostic Laboratory, which already runs on-farmprevention programs for infectious diseases, such as bovine leukosis, bluetongueand Johne's disease, is hoping to focus concern on salmonellosis, saidlaboratory Dir...SFSU Biologist Deciphers Desert Animals' Whistles And Drumbeats
...l established that adult gerbils whistle and stomp far more often and more intensely when young pups are still living at home -- strong evidence that they are trying to communicate an urgent sense of danger to their vulnerable young. In addition, pups and other family members head for cover when they hea...Good Ergonomics Is Good Economics
...lp, or creating human factors/ergonomics positions far beyond our capacity to fill them? Why is it that federal and state agencies are not pushing for legislation to ensure that human factors/ergonomics factors are systematically considered in the design of products for human use and work environments fo...Ant Pheromone May Aid Alzheimer's Patients
...turn left. And if they overcompensate and zag too far to the left, theleft-hand antennae make them steer to the right. An ant with only one antennawill only zig (or zag). And if ants' antennae become crossed, they arehopelessly disoriented. -- EVOLUTION OF THE CHARISMA CHEMICAL: Not every ant spe...Biologist Experiments With His Own Front Yard
...to most of us. "The insects are the stars as far as I'm concerned," said Alcock. "Their lives are so rich and yetthey are so utterly ignored by most people. All these bizarre things are going on right underneath our nosesand we never stop to see them and think... People are overlooking some really...Salve From Serpents? UD Studies May Explain Why Viper-Venom Protein Stops Tumor Spread In Mice
...mparedto eristostatin, for instance, echistatin is far less effective at preventingfibrinogen from intera...nded by the American Heart Association (AHA), thus far suggeststhat a triple mutation in echistatin can make it act like eristostatin withplatelets and end...Corn Rootworm Changing Behavior, Posing New Threat To Crops
...er of time before this rootworm adaptionends up as far east as Delaware," said Scott Isard, a U. of I. geographyprofessor. Given the amount of first-year corn acreage in Illinois, it would costfarmers $100 million per year to control rootworms chemically if the corn-soybeancrop rotation fails to control...Short-Course TB Prophylaxis Effective In HIV-Infected Individuals
... two-drug short-course regimen likely would be far less expensive and thus an attractive alternative to INH-based TB prevention programs. The prospect of less costly TB prophylaxis may also make such programs economically feasible in countries that cannot afford IN...Human Cloning: Grappling With Reality Penn Bioethicist To Explore The Facts Behind The Hysteria
...clone human beings demonstratesthat our society is far from ready to grapple with the hard moral questionsraised by human cloning," states Arthur L. Caplan, PhD, Director of theCenter for Bioethics at the University of Pennsylvania Health System. "Butcloning does not pose a major threat to the community ...Genetics May Explain Much Age-Related Hearing Loss
...had some sensory-cell loss just from being old,but far less than the mice lacking SOD," said Robert Burkhard, Ph.D., aprincipal researcher on the study. "This suggests that SOD may play a role incell loss, a condition that leads to hearing loss. People who havedeficiencies in SOD or other antioxidant ...Hormone Control Of Rare Leukemia Sheds Light On Molecular Basis Of Cancer
...nderful treatment for some, but not all, cases. As far as treatment isconcerned, the next step is to directly target the co-repressors." Italian researchers Saverio Minucci and Pier Giuseppe Peliccicollaborated on this study, which was funded in part by the National Institutefor Diabetes, Di......puter chips that are much faster than today's, and far moresophisticated. Scientists have already used DNA to assemble minute nanoparticles ofsemiconductors and other electronic material into crystal-like lattices andother orderly structures. But nobody until now has made a working electroniccom...Lactose-Intolerant People Should Drink More Milk, Expert Says
...eks, at the end of that period, they are producing far less gas than they were two weeks ago from the same amount of milk, and they tolerate dairy products extremely well." Research studies on calcium metabolism have shown the effectiveness of this form of treatment, Savaiano says. "We've found that if y...Biologists Map First Gene For Age-Related Hearing Loss In Mice
...oss have also been mapped.The only genes cloned so far are from the "shaker-1" mutant andSnell's "waltzer." These mice not only lose their hearing, theyhave a balance disorder which causes them to run in wild circles.Both the shaker and waltzer genes produce an abnormal form of theprotein myosin, which c...... that'stheoretically possible, such a vaccine lies far in the future, he adds. For now, viruses may be unavoidable, but people can still preventatherosclerosis by staying away from high-fat food and cigarettes, Virginexplains. "At most, viruses could initiate only the earliest stages of thedisease," he s...