Tag: "indicating" at biology news

Allergy And Asthma-Exaceberating Mites, Molds And Pollens On The Rise Due To El Niño . . . La Niña

...ewhich, if any, show signs of redness or swelling, indicating an allergicreaction. For some people the reaction might be to pet dander, while to othersit may be to the pollen of specific trees such as olive, walnut or ash. Contraryto popular belief, flower pollens are very rarely problematic to allergysufferers...

Duke Studies Show U.S. Central Plains Vulnerable To Global Warming

...ording to its growth rate, witha lower growth rate indicating a higher risk. "There are a lot of reasons why a tree can die, ranging from insects toinsufficient carbon, but the effects of all of them are summarized by its growthrate," said Clark. "Peter's model is an elegant approach, because you don't ...

Duke Studies Show That Environmental Effects Of Dams Extend To Insect Life

...presented in the understoryof the smaller islands, indicating that hyper-abundance could eventually affectthe tree species composition on small islands," she said....

Rock-Eating Microbes Could Signify Life On Mars

...r-reaching tubes within the fractures, Fisk said, indicating the microbialactivity took place on site, beneath the ocean floor. The researchers say the next step is to bring up fresh core samples andtry to extract the microbes while they are still alive. The core samples werefrom drilling studies that ...

New Research On Environmental Pollutants

...is the first study to link levels ofOH-PCB to age, indicating primarily a relation between PCB levels and age.OH-PCBs are suspected to be hormone disrupting. Analysis Of Hydroxylated Metabolites Of PCBs In Whole Blood From Canadian Inuit Courtney Sandau, Environment Canada, Hull, Canada Epidemiology Tuesday p...

Antioxidant Vitamin Supplementation And Lipid Peroxidation In Smokers

...ion lengthened and the propagation rate decreased, indicating a decreased susceptibility of LDL to oxidative modification. Increased concentrations of plasma vitamin C, beta-carotene, and lycopene were found to be significantly correlated with the conjugated diene lag phase and rate of formation. Vitamin E was ...

Scientists Discover How Influenza Virus Becomes More Deadly

...nd found noevidence of the same mechanism at work, indicating that the ability to sequesterplasminogen and thereby enhance HA cleavage was a unique property of thisparticularly virulent strain of human influenza A virus. "This is a mechanism that we never knew existed in influenza viruses," says Dr.Kawaoka. ...

Study Finds Evidence Linking The Brain's Cognitive Control Regions With Stress Control Regions

...ts showed pronounced increases in GAD65expression, indicating that following chronic stress, the animal was atte...gions of the brainthat we're seeing these changes, indicating that stress is activating inhibitorysystems," Herman said. "These studies indicate that signals fr...

University At Buffalo Team Discovers How The Cell Nucleus Orchestrates Genetic Processes

... sites with red and only very rarecases of yellow, indicating overlap, demonstrates unequivocally thattranscription and replication of DNA not only occur in two distinct areas withinthe cell nucleus, but that these sites occur as distinct clusters. The results suggest that the whole genome is divided into subr...

Genetically Speaking, Race Doesn't Exist In Humans

...ticlineages rapidly spread out to all of humanity, indicating that humanpopulations have always had a degree of genetic contact with one another, andthus historically don't show any distinct evolutionary lineages withinhumanity," Templeton says. "Rather, all of humanity is a single long-termevolutionary lineag...

Did Fur Trappers Trigger Landscape Changes?

...wynns FallsWatershed. Sedgeplants grow in marshes, indicating the land beside the streams was once muchwetter, probablybecause beaver dams were diverting water over the banks. Further research isneeded, but Brushsays, "This whole landscape could have been quite different under the influenceof the beaverpopulati...

Cell Suicide Prevented By Survival Signals

..., isalso expressed in cells that continue to live, indicating that the killingactivity of the Hid protein must be kept in check by other mechanisms. In the Cell article, Steller's team now reports that Hid is thetarget of survival signals, such as growth factors, received from theextracellular environment. ...

Interferon Less Effective Against Hepatitis C For African Americans

... 10, researchers discussed disturbing new findings indicating that interferon, the most commonly used drug against chronic Hepatitis C, is much less effective for African Americans than it is for other racial and ethnic groups. Jay Hoofnagle, MD, of the National Institutes of Health, discussed a study of the r...

Sex-Specific Behavior Controlled By Peripheral Nervous System

... their own feeding claw ratherthan the transplant, indicating a lack of motor skill in the transplant). Also, maleswere able to distinguish among stimuli of different intensities. "The results are surprising, showing that a brain region normally wiredto process touch, vibration and pressure, and thus i...

UNC Researchers Develop New Way To Measure Acid Level Of Body Fluids

...uld lead to a heart attack. "If the pH is falling, indicating more acidity, then you know that the tissue isischemic," Cascio, a cardiologist, explains. "The process of ischemia generatesacid, and the degree of acidification offers an index of the severity ofischemia. But a falling pH also seems linked to other...

First Dinosaur Embryo Skin Discovered -- Unhatched Embryos Are First Ever Found Of Giant-Plant Eating Dinosaurs

...however, does not show any signs of armoredplates, indicating that these grew only after the dinosaurs had hatched. Thisgrowth pattern mirrors that seen in modern armored lizards and crocodiles, thejuveniles of which lack the bony patches in the skin that are present in adults. The co-leaders of the expedition...

Fall Meeting: Updated Press Conference Schedule

...lues to the internal structure of Jupiter's moons, indicating that Callisto may have a thin layer of salty water one or two hundred kilometers beneath a layer of ice. Images of huge crater scars on Callisto could indicate the presence of liquid water or icy slush at a shallow depth at the time of impact. New da...

Columbia Researchers Synthesize Compound With Possible Link To MacularDegeneration; Work Is Critical To Pinpointing Causes Of Disease, Scientists Say

...ely what the Columbia chemistsmixed to obtain A2E, indicating they may have mimicked the process that takesplace in the eye. One of the questions the researchers have not yet answered is whetherA2E forms before or after the RPE takes up cellular debris. Answering thatquestion will help pinpoint how and...

American Heart Association Announces Top 10 Research Advances For 1998 -- Gene Therapy Among The List

...ulation: Journal of the American Heart Association indicating that the heart tissue of people with congestive heart failure can recover some of its function. In both studies, the "treatment" was the left ventricular assist device (LVAD), which takes over the pumping action of the heart for patients with severe...

Center Set Up To Evaluate Evidence Of Chemical Threats To Human Reproduction

...enter will bring together experts to evaluate data indicating that a chemicalor mixtures of chemicals could impair human reproduction and development. For reasons that are "largely unknown," according to the officialannouncement: Between 5 and 10 percent of couples who want to have childrenca...

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