Monogamy Has Its Rewards For Flies
...females that were specially bred to beparticularly sensitive to seminal fluid toxins. The females were 20 per centless likely to die after a single mating with monogamous males, Holland toldlast week's meeting. Monogamous males also spent 40 per cent less time harassingtheir females. Such harassment often redu......impossibleeven a decade ago until the invention of sensitive techniques that allowresearchers to determine the exact genetic makeup of individual plants in anecosystem. Even now, the problem is daunting, since there were more than 800possible parent pairs. "In trying to tell who the parents are, we had...... breathe through their skin so they are remarkably sensitive to forcesin their environment. I believe it's essential to gain understanding of thescope and extent of this problem. Certainly whatever is killing and deformingfrogs, toads and salalmanders may be a powerful warning signal to us all." Secr...Minuscule Ocean Plants Help Stabilize Earth's Atmosphere, Climate
...und time alsomeans phytoplankton are exceptionally sensitive to change, the authors noted. Whether or not phytoplankton grow in abundance depends on theavailability of nutrients that arrive at the whim of ocean currents and seawatermixing that may turn on and off. Climatic alterations onshore also can affectth...Studies Suggest Cold Can Protect Valuable Papers
...osition, orhydrolysis, of these bonds is extremely sensitive to changing temperature andthat refrigeration should provide a singularly effective means of preservingvaluable documents." A report on the research appears in the current (July 15) issue of theJournal of the American Chemical Society. Wolfe...Salamanders May Reveal Best Way To Manage Forests
...irds and mammals. Salamander habitat is especially sensitive to forestmanagement practices that open the canopy...us that in these habitats salamanders areextremely sensitive to any form of canopy disturbance," Harpole said. "Managingcertain areas of forest intensively and t...Molecular Circuit Breaker Can Prevent Runaway Cell Growth
... or stimulate ARF production might make cells more sensitive to themany conventional forms of anti-cancer therapy that act by damaging the DNA oftumor cells....Genetic Clue Found To The Leading Cause Of Blindness In The United States
...vision comes from deterioration of a particularly sensitive area of theretina called the macula. The team of scientists has zeroed in on the locationof a gene that causes an inherited form of the disease. Details of this researchappear in the August edition of the Archives of Ophthalmology. The team ......o turn off the switch; in addition they are not sensitive to GTPase activation by neurofibromin. Thus, understanding neurofibromin function also means understanding aspects of Ras function, linking NF1 to cancerogenesis. Apart from neurofibromin, there are other GTPase activating protei...Persistent Organic Pollutants, The Danger Is Not Over
...n in small doses. "Are human babies as sensitive as young mice? We do not know, but we cannot ignore the risk", according to Per Eriksson, scientist at the University of Uppsala. (His findings are also presented in the new report Prenatal Developmental Neurotoxicity of PCBs, Swedish ......ance slow endurance-promotingmuscle, which is more sensitive to insulin. "We believe this pathway provides a molecular explanation for the importanteffects of aerobic exercise in increasing physical endurance and reducing riskfor cardiovascular disease," Williams said. "When people go jogging, molecularevents ...New Research: Children Inhale Higher Percentage Of Pollution
...cause we also found childrenseemed to be much more sensitive to changes in the volume of air breathed interms of the amount of particles they retain." The UNC-CH scientists also will compare mouth versus nose breathingsince people switch from breathing nasally to breathing orally at some pointduri...Blood Levels Of C-Reactive Protein May Predict Heart Attack And Stroke Risk In Women As Well As Men
...risk among women. "C-reactive protein is a sensitive marker of inflammation, the processwhereby the body responds to injury," says Paul M. Ridker, M.D., of Brigham andWomen's Hospital and Harvard Medical School, Boston. "When we measure thisprotein with high-sensitivity test procedures, we seem to be ...Commercial Fish: Eat Up, Despite Low Levels Of Mercury
...to their parents, and performingnearly three dozen sensitive developmental and neurological testsdesigned to de...se results do show that the tests theteam used are sensitive enough to detect very subtle neurologicaland psychological effects in children, says Davidson. ...Scientists Discover How Bacteria Protect Themselves Against Immune System
...ill them with almost nothing. They're exquisitely sensitive to nitricoxide. Yet, if they're exposed to nitric oxide all the time, the bacteria revup this system to detoxify it." Dr. Salzman speculates that this may be what predisposes smokers to infection. Smokers constantly bathe their lungs with huge conc...Scientists Find New Clues About Fatal Childhood Disease, Ataxia Telangiectasia
...o improve cancertherapy by making tumor cells more sensitive to radiation." Researchers have long been interested in A-T because it affects many differentsystems in the body, including the nervous, immune, reproductive, andcirculatory systems. Children with A-T, who possess two defective copies of the...Hyperforin Is A Key To St. John's Wort, Researchers Say
...r any other dietarysupplement. Those with fair or sensitive skin who take this product shouldavoid prolonged direct sunlight or should use a sunscreen with an SPF of 15 ormore, as photosensitivity may occur. The mood support supplement is available in food, drug and massmerchandise outlets. The 300-..."Salt Gene" Determines Benefit Of Low-Salt Diet
...ion. "This is a first step in defining who is salt sensitive and who is not," sayslead author Steven C. Hunt, Ph.D., professor of medicine at the University ofUtah School of Medicine in Salt Lake City. "However, we are not to the pointyet where we can say on an individual basis: If you have one particular for......eady had some evidence that this bacterium is very sensitive to antibiotictreatment, so an analysis of these patients in terms of their antibiotictreatment was performed," Peck said. "It appears thatceftazidime and trimethroprim-sulfmethoxazole, two broad-spectrum antibioticsoften used against a variety of bac...Zinc In Sludge From Spanish Reservoir Break Equals Mine's Annual Output, Researchers Find
...lants and nitrogen-fixing bacteria areparticularly sensitive to zinc pollution, causing concern about possible croplosses. Algae also is affected negatively by excess zinc, she said, posing apossible threat to fish populations that depend on algae as a food source. In wildlife studies since the mine ...