Tag: "correlation" at biology news

A small genetic change makes flu virus deadly

...ses in laboratory mice, the researchers found good correlation between how sick certain H5N1 strains made mice and how sick they had made humans. The researchers divided the H5N1 strains into two groups: one that caused systemic lethal infection in the mice and one that was relatively benign. Mice are a good m...

Chemical found in herbal medicine might complicate pregnancy

...dded that further study would be needed to prove a correlation between gingko and complications during a pregnancy. Their study used placental blood samples taken from 24 new mothers in the Detroit area. Measurements confirmed that the five women who regularly took gingko had colchicine levels ranging from 49 to...

Science researchers report 'extremely unstable' gene expression in cloned mice

...ssion, the researchers didn't find any significant correlation between any of the specific variations in gene expression and increased weight. The cumulative action of many abnormally expressed genes may be necessary to produce the overgrowth in clones, say the researchers in their report. After documenting ...

Microbes and the dust they ride in on pose potential health risks

...r dust episodes reaching Florida, there could be a correlation with increased respiratory problems." In addition to the dust itself, even small concentrations of fungal spores can trigger allergic reactions. A study by M.E. Howitt of the Queen Elizabeth Hospital in Barbados documented a 17-fold increase in asth...

Scientists share multidisciplinary discoveries at 'Earth System Processes'

...in California, will talk about a direct, empirical correlation between atmospheric CO2 and land temperature measurements that indicates a strong greenhouse warming effect: 5 degrees Celsius for CO2 doubling. Berry Lyons, Department of Geological Sciences and Byrd Polar Research Center at the Ohio State Universit...

Georgetown researchers achieve increased cancer patient survival

...nes --New data at ASCO meeting shows first correlation between increased immune responses and patient survival with Therion vaccines-- San Francisco, CA, May 14, 2001 Demonstrating new success in cancer immunotherapy, researchers today reported that they have increased the survival time of cance...

Smart polymers provide size-selective switches to turn proteins on, off

...nd to the site. The group also discovered a close correlation between the size of the polymer chains and the size of the molecules affected. So we can be very specific about what we want to target, Stayton said. He added that the property change of the smart polymer is striking a small environmental change t...

Older fathers more likely to have children with schizophrenia

...he length of the parents' marriage increases. This correlation works opposite to, but doesn't cancel the effect of, advancing paternal age, Dr. Malaspina said. Dr. Malaspina added that the new findings on paternal age should help redirect research strategies for identifying schizophrenia's causes. First, rese...

Fewer airline crashes linked to 'pilot error'

...ilot could see clearly. "We observed a very high correlation between bad weather and pilot error," says Susan P. Baker, M.P.H., another author of the study and professor of health policy and management at Hopkins' School of Public Health. "The primary cause was the pilot's inability to deal with the weather ...

UCSF study of HIV patients identifies interleukin-7 as a key factor in controlling T-cells

...of 19 HIV-infected individuals. A strong inverse correlation was found between IL-7 levels and CD4+ counts. Similar correlations were not found with 9 other cytokines and hormones that were studied. The investigation was then extended to a larger "cross-sectional" cohort of 168 HIV-infected individuals. This...

Global diagnosis completed of ocean regions most sensitive to an iron-rich diet

...an phytoplankton productivity. The areas where the correlation between iron deposition and ocean color were found...ADEOS satellite and found that the regions of high correlation between dust deposition and ocean productivity were essentially the same. Global, satellite-based a...

USGS: Contaminants may play important role in California amphibian declines

...d. "Unfortunately, now there appears to be a close correlation between declining populations of amphibians in the Sierra Nevada and exposure to agricultural pesticides." The scientists found proof that pesticides are being absorbed by frogs in both aquatic and terrestrial systems and are suppressing an enzyme ...

Researchers discover new mechanism of drug that alters genetic makeup of viruses

...rin used. With that strong ribavirin-to-antiviral correlation in poliovirus, Cameron hopes to have crafted a template that can be utilized to address other RNA viruses. Along with poliovirus and hepatitis C, members of the RNA virus family include: rhinovirus, the common cold; coxsackie virus, summer flu; and ...

Penn State researchers unravel key facts about how a virus exits a host cell

...he plasma membrane. The research shows an apparent correlation between L domains and ubiquitin. The simplest interpretation of the Penn State research is that budding requires ubiquitination of the RSV Gag protein....

Study sheds new light on how the 'mind's eye' works

...on. The firing of these neurons could represent a correlation common to vision and imagery. Given the prominent role of the medial temporal lobe in memory, it also seems possible that these neurons could be activated during storage of incoming visual inputs, and later reactivated during the mnemonic retrieval ...

Pollution from urban sprawl threatens aquatic life in major U.S. cities

...ers, however, were unable to speculate on a direct correlation between air quality and water quality. Sources of PAHs from traffic include, soot, asphalt, motor oil, tire and exhaust emissions. The contaminants can also come from industrial plants or other sources, but the researchers determined the increase was...

Study suggests diabetics can use light to measure glucose

...redibility of previous experimental protocols. Any correlation between the amount of infrared light detected through tissue and glucose levels, they argued, was coincidental. "Our new findings represent what we feel is the first comprehensive demonstration that noninvasive measurements can be made with infrared...

Polymeric chains in 'Flatland' reveal surprises, researchers say

...asurement technique called two-photon fluorescence correlation spectroscopy, developed by biophysicists but never applied previously to materials science problems, to monitor the motions of individual molecules. "Conventional theory said that a molecule twice as long would move half as fast," Granick said. "Bu...

What happens when genetic information is not correctly edited in brain cells

A correlation between impaired editing of RNA and epilepsy is reported by scientists from the Max Planck Institute for Medical Research in Heidelberg/Germany. They succeeded in correcting the defect by genetic manipulation in the mouse. The soon-to-be-complete...

Bt corn variety found to be safe to Illinois butterfly

...ad of the UI entomology department. "There was no correlation between mortality and distance from the cornfield or between mortality and pollen load." Some of the deaths were directly attributed to predation by spiders, carnivorous insects and other environmental factors, the researchers said. Black swallowta...

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