Virginia Tech Scientists Studying Cells From Extreme Environments
...ndefinite shelf life. "The ability to withstand UV radiation is extremely important," Potts says."Finding the mechanism for this protection could be very useful in protectingother types of cells from this type of radiation." Potts and Helm have isolated and purified the biopolymer and have devised a newtechniq...Study Finds First Genetic Clues To Brain Tumor Treatment
...val rates of one to two years after treatment with radiation therapy, thetreatment for most malignant brain tumors. Microscopic examination ofoligodendrogliomas shows no difference between the tumors that do and do notrespond to chemotherapy. Louis and his team previously had identified three genetic changes...USGS Issues Wildlife Health Alert: Associates Virus With Salamander Die-Offs
...ia or parasites; increased exposure to ultraviolet radiation due to ozone thinning; the spread of non-native predators; contamination from pesticides and other chemicals; and rising temperatures. Many biologists suspect that a combination of factors may be responsible....UT Southwestern Study Uses Common Cold Virus For Gene Therapy To Treat Head And Neck Cancers
... and neck cancer thathasn't improved with surgery, radiation or chemotherapy may benefit from anexperimental therapy available at UT Southwestern Medical Center at Dallas. Physicians in the Department of Otorhinolaryngology have begun injecting agenetically altered adenovirus, one of the viruses that cause the...Mouse Study Trumpets New Way To Preserve Species
...ue, usually when a young woman is about to undergo radiation or chemotherapy for cancer," he says. Critser and a group at Methodist Hospital have collected samples from a human patient and are applying for funding to expand their study. Critser is a reproductive physiologist who serves as adjunct ass...Fall Meeting: Preliminary Press Conference Schedule
...rent solar cycle, produced an additional temporary radiation belt andionospheric electrical currents 300-400 percent greater than usual. It was alsodiscovered that Van Allen Belts are natural particle accelerators, withimplications for predicting space weather. 12:15 PM: Europa and Callisto as seen by Galileo ...Fall Meeting: Updated Press Conference Schedule
..., SM21B Forty years after Van Allen discovered the radiation belts around Earth, scientists have found that Ear...early the speed of light. Discovered in 1958, the radiation belts have long been considered static and stable. But new measurements from spacecraft and ground ...NCAR Team Tags 'Imported' Pollutants Over The Pacific Northwest
...ticles of liquids and solids) to reflect the sun's radiation may beone reason that increasing greenhouse gases have not warmed the earth asmuch as some climate models have predicted. Sulfates also contribute tolocal pollution and acid rain. "One important way that sulfur moves in the atmosphere is throughtrans...Radioactive Beads Latest Weapon In Fighting Cancer In Dogs, Cats
...of Veterinary Medicine areusing a new, implantable radiation treatment option. According to Dr. RuthanneChun, a...lampedin place, they begin to emit a set amount of radiation into the tumor bed. "We know from past experience how much of a dose, how much radiation, a tumornee......e ability of sulfate aerosols to reflect the sun's radiation may beone reason that increasing greenhouse gases ...ei, the brighter the cloud, that is, themore solar radiation reflected back into space before it reaches theearth's surface. This radiative effect is what makes ......ia,who underwent a lumpectomy, lymph node surgery, radiation and chemotherapy in1997. Initially she was afraid to explore the subject for fear of learning morethan she could emotionally handle. But with time that hesitation turned toaction, as she began to seek information about the disease and, ultimately,dec......w they affect theatmospheric composition and solar radiation processes over the ocean. A majorobjective is to e... INDOEXregion, the haze particles reduce the solar radiation absorbed by the oceansurface by as much as 10%. The airborne particles over the northern Indian ocea...UV Radiation Induces Vitamin A Deficiency In Skin
...nt to pay. While it is well known thatultraviolet radiation from the sun has many effects on skin, scientists ...unction. "Eight hours after skin was exposed to UV radiation in our study, amounts ofretinoic acid receptor messenger RNA and protein were as much as 70 percentl...Researchers: 'Exciting' Discovery Might Improve Cancer Treatment
...and off like a switch. Doctors use chemotherapy or radiation to killcancer cells, but the UNC-CH researchers reported two and a half years ago thatNF-kappa B kicks in and soon enables many cultured tumor cells to escape death.After developing resistance to the therapy, the cancer cells continuereproducing and ...Mixing Radiation, Minerals, Toxic Waste Could Be Cleanup Boon -- Or Kaboom
...n that common soil minerals can work with ionizing radiation to breakdown toxic wastes into simpler compounds. ...n. Metal oxides are driving reactions in which the radiation breaksdown the chemicals, she said. "By storing radioactive liquid with solid material, they are deg......timer's results could explain why chemotherapy and radiation therapy areso effective against early-stage breast...y drugslike 5-fluoruracil and cyclophosphamide and radiation therapy all work bydamaging DNA. If a breast tumor has a poor capacity to repair this damage, itwil...Tumor Oxygen Level And Blood Flow Fluctuate, Duke Scientists Discover
...important because the two major cancer treatments, radiation andchemotherapy, depend on a constant high oxygen ...t predictable and might represent an impediment to radiation therapyand drug therapy," said Mark Dewhirst, co-director of the radiation oncology andhyperthermia ...No More Running Blind In A Maze-The Laboratory Rat Genetic And Radiation Hybrid Map Is Here
...on of a high-density integratedgenetic linkage and radiation hybrid map is a landmark in the field ofgenomic sc...t genome. This report alsopresents the first ever radiation hybrid map (RH Map) for the rat, which isa map that provides physical rather than genetic distance o...The Origins Of Hereditary Breast Cancer -- Studies With Knock-Out Mice Reveal Underlying Mechanisms
...environmental factors such as UV light or ionising radiation in tumorigenesis. Dr. Uwe-Kay Wagner is a former student of agricultural science of the Universityof Leipzig and received his Ph.D. from the University of Halle. Presently he isat the National Institute of Diabetes and Digestive and Kidney Diseases i...Echinacea Symposium Presents New Research On Chernobyl Victims
...feguard a population that is facing high levels of radiation exposure; A study of how Echinacea purpurea can pr...nacea purpurea can protect organs and tissues from radiation damage. The world's leading Echinacea researcher, Dr. Rudolf Bauer, is the keynotespeaker. Dr. Ba...