'Rolling Circles' Provide New Way to Amplify and Detect DNA
...nzymes intoa test tube, and when you come back 12 hours later, the tube isfull of DNA. "It's now feasible to make bucketfuls of DNA, an amount wecan't even begin to approach with other amplification techniques." Unlike other DNA-copying techniques now in use, rolling circles don't require spec...Even Moderate Air Pollution Reaching Eastern Wilderness Decreases Mountain Hikers' Lung Function
...18 to 64 years of age and hiked an average ofeight hours each. During this time, they were exposed to average ozoneconcentrations from 21 to 74 parts per billion (ppb) per hour. The overallaverage exposure was 40 ppb, which the researchers called "a relatively lowlevel characteristic of much of the contin......t attacks had an increased level of TnTwithin four hours of entering the ER. "Our study showed that putting TnT levels together with echocardiogramswas a more powerful predictor of subsequent cardiac events in these patientsthan using either test alone," notes lead author Emile R. Mohler, III, MD,...Biologist Experiments With His Own Front Yard
...bor who wonders what he's doing out in the yardall hours of the day and night, staring at a plant... And, speaking of testing the neighbors, there's the driedcow patties that he puts out in his yard to attract termites. "The cow pies still generate a certain amount of disapproval, but I'll always k......an tumors placed in chicken embryos. Withinseveral hours the tumor fragments began to attract new blood vessels. After 24hours the embryos were injected with PEX or a control enzyme fragment. PEXsignificantly inhibited the growth of these tumors; the control enzyme hadlittle if any effect. To establish whe...USGS Cautions Proper Use Of Pepper Spray To Avoid Bear Attacks
... Before this study, Smith had spent more than 750 hours observing brownbears at Kulik River. "During that time," he said, "I had never seen bearsrubbing their heads on the ground, pawing and licking soils, or rolling on theirbacks." These novel behaviors, said Smith, arise directly from expo...At Life's Most Sensitive Stage, Embryos Cope With Stress
... tidepools,began expressing heat shock proteins 30 hours or more into their development; atthat point, the proteins offered some protection from temperatures that rose ashigh as 88 degrees Fahrenheit. For the first day of life, however, the earlyembryos had to depend on the good fortune of a cool day to pr...Johns Hopkins Scientists Designing Compounds To Fight Malaria
...hrenheit. "A person cannot survive more than a few hours having cerebralmalaria," Posner said. The next step will be to determine whether it is safe whenadministered in large doses. Preliminary safety results areencouraging, Posner said. Malaria is a menace in regions stretching from Africa to theCaribbean...Jefferson Researchers First To Create Genetically Engineered Mouse To Study Photoaging
...etect this increase in elastin asearly as 24 to 48 hours after irradiating the mice. "Our transgenic mouse is ahuge advance because of the rapidity and sensitivity with which we are able tomeasure results," said Dr. Bernstein. "Other mouse models have taken at leastsix months to a year to show effects of...Scientists Invent Faster Gene Function Identification System
...stgrowth rate -- the fish are adult size within 24 hours after they hatch. Andthere is strong evidence of genetic similarities between zebrafish and othervertebrates, including humans, Wagner says. "Scientists are learning a lot by the identification of gene sequences,but without information on wh...Intake Of Acetaminophen Increases Risk Of Excessive Anticoagulation In Patients Taking Warfarin
... from the hospital's anticoagulation unitwithin 24 hours of a regular outpatient INR test. Among these patients, 93 hadbeen found to have an INR greater than 6 -- a level associated with increasedhemorrhage risk -- and 196 were controls with INRs in their target range of 2 to3. Patients were contacted by......astingtriglycerides -- measurements taken after 12 hours of fasting prior to the test. "When the triglyceride levels were measured by the amounts of HDLcholesterol in the blood, a clearer picture emerged," says Jeppesen. "Even thosewho had high HDL levels, which are thought to protect against heart...Research Finds That Watching TV Helps Kids Put On Pounds
...pkins Bayview Medical Center have found thatas the hours of television watched by American children increas...ne quarter of all U.S. children watch four or more hours oftelevision each day. These children weighed more and were fatter then childrenwho watched fewer th...Pitt Researchers Develop Strategy To Use Dendritic Cells To Treat And Prevent Tumors
...s and DC's that were mixed with tumor cells for 24 hours beforeinjection. By linking a dendritic cell with a lung carcinoma cell, Pittresearchers formed a fused DC-tumor complex that was injected into mice withestablished tumors. Mice receiving this fusion vaccine rejected their tumorsand survived until ...Ameriflux Network Will Track CO2 Transfer In Forests
...ings will berecorded about 10 times per second, 24 hours a day for several years. "Legislators and policy makers want scientists to predict what's going to happenin the future as people continue to burn coal, oil and other fossil fuels whichpump more carbon dioxide into the atmosphere," said James A. Teeri...Keep Off The Grass - Reduce Air Pollution
...crease around 100-fold after grass is cut, taking hours to reduce to their original level. To measure emissions of these air pollutants from grass, scientists from Monash and CSIRO set up a transparent chamber in a grass paddock in Gippsland, south-eastern Victoria. The scientists collected and analy...UPMC Reports On New Liver Assist Device
...bio-artificial liver assist device at either 16-18 hours or 24-26 hoursafter liver failure was initiated. The report indicated survival times in the groups treated with theExcorp device could be extended. These results suggest that the bio-artificialliver assist device does in fact have a marked..."A Thousand (And More) Points Of Light" Yield New View Into Cells
...utes. By 60 minutestranscriptionfalls off, and two hours later, it's gone." This indicates the existence of anas-yet-unknown regulatory feedback mechanism, says Singer. The new technique has also enabled the researchers to show that the rate atwhich genes are transcribed is limited not by the speed at...Chocolate Treats Can Land Racehorse Trainers In Trouble
...ine inthe horses. Urine samples taken five to six hours after eating M&M’s®on the eighth day of feeding showed caffeine concentrations around 0.05parts per million and theobromine concentrations at about 9.5 parts permillion, enough to show up using current testing methods and enough to disqu...... appears there may be a window of at least several hours when one could administer them." The findings are...ay because their demise was delayed, beginning six hours after the procedure and peaking between 18 and 24 hours. Just before they died, the cells activated ...