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Tag: "alone" at biology news

Hooked on fishing, and we're heading for the bottom, says scientist

...litical beachhead. But he emphasizes that research alone won't solve the crisis. It's time for dramatic political leadership to move from a global marine tragedy to a future with bountiful fish. Says Dr. Pauly: "Reclaiming the ocean and its resources from excessive use will be a key task for humanity in t...

Ernst Mayr's theory illustrated in genetic epidemiology studies

...rections that can't be predicted just by selection alone because a random force puts a new direction into p...English biologist R. A. Fisher believes that genes alone inherently are major or minor in terms of effects on traits. A school following the 1920s biologist...

Antioxidant selenium offers no heart-disease protection

... trial to date to examine selenium supplementation alone in the prevention of CVD, appear in the April 15 i... no overall benefit of supplementation by selenium alone in prevention of cardiovascular disease." ...

Marine mammals are on the frontline of failing ocean health

...es virus in sea lions without cancer, so the virus alone isn't enough to cause cancer in sea lions, which is why we think organochlorines (a class of POPs) play a role either directly in the urogenital tract or in suppression of the immune system," says Frances Gulland of The Marine Mammal Center. "These ...

Boosting newborns' immune responses

... Conceivably, TLR8 stimulators could also be given alone in special circumstances ?to help a baby fight off an infection in progress, or as a preventive measure in the event of a disease outbreak or bio-terrorist threat, Levy adds. Levy's team is uncovering other differences between the newborn and adult ...

New evidence questions the simple link between prion proteins and madcow disease

... cautious you are about saying that prion proteins alone cause the disease," says Martin Jeffrey. In a commentary published in the same edition of the journal Dr Nicole Sales of the Department of Infectology, at the Scripps Research Institute Jupiter, Florida, suggests that one possible explanation that k...

Study shows AIDS drugs cost-effective, care underfunded

...gs on HAART's cost-effectiveness, "Providing drugs alone is not enough," he said. "We must focus now on creating appropriate incentives for providers to care for HIV patients. The current pool of providers is struggling to make ends meet. As they begin to retire, where will the new wave of physicians come ...

New nanosensor uses quantum dots to detect DNA

...t is visible under a microscope. But quantum dots alone cannot find and identify DNA strands. For that, the Johns Hopkins team used two biological probes made of synthetic DNA. Each of these probes is a complement to the DNA sequence the researchers are searching for. Therefore, the probes seek out and bi...

Sooner is better with cochlear implants, Stanford scientist shows

...said," he said. In most situations, hearing speech alone is just fine - that's why we can talk on telephones. But in noisy situations, when hearing is poor, our brains rely heavily on lip and facial movements to figure out what someone is saying. Knudsen has a long history of studying the ability of the b...

Travelers can avoid jet lag by resetting their body clocks

...llowing rapid transmeridian jet travel. Melatonin alone has been shown to synchronize the circadian clock of the blind to the 24-hour day. "However, this is the first study to show that melatonin and bright light can both help to advance the circadian clock, and the combination of bright light and melat...

Mouse study: New muscle-building agent beats all previous ones

..."We weren't really expecting to see an effect, let alone an effect that sizeable." In other experiments with normal female mice, weekly injections of the new agent provided the biggest effect on muscle growth after just two weeks at the highest dose given (50 milligrams per kilogram mouse weight). Dependi...

Study shows combination of immune substances to be safe

...y for some cancers. Normally, interferon is used alone to stimulate the immune system to attack certain cancers. This strategy, a form of immunotherapy, is sometimes used to treat melanoma, advanced kidney cancer and other tumors that respond poorly to chemotherapy or radiation therapy. But interferon ca...

Penn researchers study the use of ultrasound for treatment of cancer

..., in the future, treatments with ultrasound either alone or with chemotherapeutic and antivascular agents could be used to treat cancers." ...

Compound from marine bacteria shows potential as multiple myeloma therapy

... might be more effective than using either therapy alone ?and be better tolerated by patients as well. In ...ffectively by the combination than either compound alone ?without additional toxicity to normal cells. "This is a laboratory advance that shows clinical pro...

Brain activity related to processing faces is similar in people with, without autism

... in the opposite direction. The test with arrows alone had been used previously in studies elsewhere, but the addition of faces was unique to this new study. "We wanted to know if previous findings of under-responsiveness in the 'face area' of the brain in autism could be simply attentional, or related ...

Scientists observe how a close bond activates the immune system

...e system is highly complex. The cast of characters alone required to marshal an immune response to a foreign invader can number in the millions as the body's soldiers, T cells, are called into action. What triggers this complex response begins when T cells and dendritic cells, another type of immune cell, ...

Logging doubles threat to the Amazon, rivaling clear-cutting, study suggests

...ed forest area than was reported for deforestation alone in the same study period. The total volume of harvested trees represents roughly 10 to 15 million metric tons of carbon removed from the ecosystem, according to the authors. They estimate that this amount represents a 25 percent increase in the over...

Retinal scans eyed for New Mexico show cattle

...ired. Separately, NMSU experts examined RFID tags alone on several hundred cattle on a communal grazing allotment in the Valles Caldera, an 89,000-acre area in the Jemez Mountains. Communal grazing allotments are typically seasonal, running from May to October. "We wanted to show the small-scale producer...

Displaced songbirds navigate in the high Arctic

...est-to-east displacement by using geomagnetic cues alone or in combination with solar cues. The experiments suggest that, in contrast to what would be predicted by a simple genetic-migration program, both adult and juvenile white-crowned sparrows possess a navigation system based on a combination of celest...

Emerging staph strains found to be increasingly deadly and deceptive

...unity-acquired MRSA infections are increasing, let alone how they flourish," he says. But scientists do know the community strains can cause more severe forms of disease. Mild S. aureus infections such as impetigo, which typically forms small blisters on the faces of children, or cellulitis, an inflammati...

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