New Cancer Switch Discovered By Duke Medical Center Pharmacologists
...cer-killing drugs, which is a major cause of death among cancer patients. The scientists discovered that some mutant BCR-ABL genes eliminated both the cancer-causing and anti-apoptosis capabilities of the cells. However, they found one mutant that did activate the oncogene ras and did block apoptosis, but ...Computer Program For Quicker, More Detailed Mapping
...nome. "The maps we've made using this program are among the highest-resolutionmaps that have been made to date, but they're not detailed enough to allowsequencing the whole genome. Next, we'll do more of the same but with fivetimes the number of markers so that we can use the maps for sequencing,"said Mye...NADC Examines TB In Cattle and Swine
...larly to all threetuberculins with small variation among the responses. Cattle tested positivelyfor M. bovis most often when the Mexican tuberculin was used. Butthe research team concluded that there was no need to standardize the tuberculins. Plans are being made to use swine in studies by the NADC tea...Humble Pocket Gophers Shed Light On The Genetic Fortitude Of Cheetahs
...ains. The pocket gopher, small and squat, scurries among tunnels in the American West. Unbeknownst to eithe...rs and elephant seals, may have little variability among their immune systems and thus may be more vulnerable to outbreaks of disease. "Genetic variation is ...Protein Glitch May Be Early Problem In Inherited Alzheimer's
...nce the formation of plaques in the brain that are among the earliest signs of Alzheimer's disease. Hopkins researchers currently are looking at mice in which the gene for presenilin is knocked out so that presenilin's function may be revealed by its absence. Scientists estimate that 15 percent of Alzheime...Bark Beetle Infestation Spurs Multifaceted Study
...e wood were a conglomerate of immigrants. Included among theseworkers were large numbers of Chinese laborers. "The archaeologists don't want to disturb the archaeological sitesor destroy the tree stumps which can give them information about dates,"says Taylor. "I'm looking at the tree stumps to try to re...Hawaiian Whales Show 'No Overt Response' To Sounds Of ATOC Simulation
...er ATOC speaker, also found no sign of disturbance among marine mammals, including elephant seals and seve...ATOC sources is that if adverse effects are noted among marine mammals, the experiment will be modified or halted. "ATOC is an important international st...Duke Ecologist Says Logging Is Creating 'Mahogany Deserts'
... that mahogany trees there were sparsely dispersed among otherspecies at an average density of one tree per hectare (about 2.5 acres),though occasionally in clumps of up to 20 mahoganies per acre. Mahoganytrees grow so big and wide that they must be spaced far apart to "keepfrom crowding each other out," s...Component In Soy Products May Be Substitute For Estrogen Treatment
... believed to play a role inlow breast-cancer rates among women in Southeast Asia where soy proteinis regularly consumed. "Although this is a relatively short-term study for evaluating changesin bone parameters, the results suggest a potential role for soybean isoflavonesin maintaining bone health, particu...NCAR Scientist Models Earth's Climate and Vegetation Patterns At Last Glacial Peak
...hich plant types our ancestors would have wandered among during the last glacial maximum (LGM) 21,000 years ago. Felzer presented his work on Wednesday, October 30, at the annual meeting of the Geological Society of America in Denver. These models present a world blanketed by massive ice sheets over Canada...An Equal Opportunity Extinction? Cincinnati Geologists Find Global Impact from Permian Die
...currences of articulate brachiopods. This groupwas among the hardest hit during the extinction event. "They...an another. Hisanalysis showed no clear difference among regions. Temperateareas were hit just as hard as tropical ones. Secondly, he looked at distinct envi...Study Examines How Mechanisms Evolve To Regulate Bee Development
...lehormone affects the well-known division of labor among worker honey bees,which plays a key role in the ecological success of the species. This project, however, looked specifically at how juvenile hormone affectsthe behavior of the stockier, bigger-winged drones in an attempt to gaininsight into the evo...... found between genotypes and risk of breast cancer among premenopausal women who smoked. Christine Am...lation could affect the incidence of breast cancer among smokers, the researchers used data from an earlier case-control study of the disease. Extensive dat...Impact of Meteorites, Drop in Sea Level Caused Mass Extinctions 65 Million Years Ago
...nctions in Earth's history, and its cause has been among the most contentious, hotly debated issues in pale... important because it may result in more agreement among proponents of different end-Cretaceous extinction scenarios." However, the scientists -- pal...Researchers Develop Model Using Birds As Indicator Of Wetlands Health
...will be a useful tool toprovide a quick comparison among wetlands as well as a way tomonitor the health of one particular wetland over time. As part of his Ph.D. research, he also hopes to refine themodel and extend his work with birds to other types of wetlandenvironments. For example, U.S. EPA researcher...Researcher Discovers Key Brain Center For Speech
...ulaabout the size of a pencil tip eraser. One step among the many brain processesfrom generating the concept to uttering the word, this tiny area seems tobe necessary for coordinating the sounds of speech....Siblicide In Nature: Study Of Galapagos Seabird Finds Death Can Ensure Species Survival
...erson, who first began examining siblicide in 1984 among the boobies that nest on Isla Espanola , the Galapagos most southeastern island, was why. Why engage in a behavior that would seemingly condemn the species to extinction? Why lay two eggs if the goal was only one child? "Siblicide demands an e...Scientists Discover Smallest Frog
...ge-striped black frog living under leaf litter and among the roots of ferns in a humid rainforest on the western slope of Cuba's Monte Iberia. Hedges and Cuban scientist Alberto Estrada gave the frog the scientific name Eleutherodactylus iberia . Those two words are more than three times longer than the...World's Experts Plan Global Locator Service For Environmental Information
...ion they need." The agreement was reached among representatives to the Global Information Society initiative, which was convened at the suggestion of Vice President Gore and organized by the G7 (Canada, France, Germany, Italy, Japan, United Kingdom, United States, and the European Commission). The...Robots, Virtual Reality & Other "Smart" Tools Soon Will Help Physicians Heal Patients
...s apart participating in live surgery -- these are among early 21st century technologies doctors and engineers are dreaming about and developing now. "We're encouraging close collaboration between engineers and surgeons to rapidly develop research and technology that can provide more precise inform...