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Tag: "danger" at biology news

New research indicates a 'troubled' greenhouse is brewing

... human consumption of hydrocarbons, and there is a danger that another similar outburst could be triggered by warming of polar and submarine ice due to human activities. Our little warming push could repeat the troubled times of 55 million years ago." However, Retallack says these findings indicate it is u...

Falling ants glide back to trunk to avoid dangers of forest floor

... the outer reaches of branches and are in greatest danger of being knocked off by wind gusts or passing monkeys. There is some evidence, Dudley said, that these ants sometimes purposely drop off the tree to avoid predators, evidently secure in the fact that they can glide back to the same tree. "To me, one...

Drug-resistant bacteria on poultry products differ by brand

...n, when raw poultry is handled in the kitchen. The danger of infection is heightened when this pathogen is resistant to antibiotics. Not only can the bacteria itself cause illnesses such as diarrhea in humans, but fluoroquinolones are some of the most important drugs used to treat a variety of infections, i...

WHO Warns Of Increased Risk Of Vector-borne Diseases In Tsunami-affected Areas

... or from the nose or gums, sweating, cold skin are danger signs. If any one of them is noticed, the patient should be taken to a hospital immediately. * The patient should be given fluids to drink during transfer to the hospital. * The patient should be provided nutritious food and fluids. * The...

Computational Method Speeds Mapping of Cell Signaling Networks

...a T-cell encounters a foreign invader, it relays a danger signal throughout the cell, activating it for a quick response. These signals prompt activated T-cells to multiply rapidly and send out molecular "distress signals" that attract other immune system molecules to battle the infection. Components in the...

Unlike other mammals, newborn dolphins and orcas stay active 24/7 during first months of development

...newborn cetaceans: Movement and wakefulness reduce danger from predators, help maintain body temperature until mass and blubber insulation develop, allow frequent respiration at the surface, and facilitate rapid growth of brain and body and related behavioral development. "Somehow these seafaring mammals h...

Why are coyotes getting more aggressive?

...tous in North America, but they rarely have been a danger to humans. Fearful of being hunted and trapped, these large carnivores have typically stayed in wooded areas and away from humans. But now that coyotes have started foraging in suburban areas, more research is needed to find out why and how to preven...

Scientists uncover new clues about brain function in human behavior

...hrough the monitoring of daily life events such as danger signals. Scientists know from animal studies that ...uch faces are known to be highly socially relevant danger signals that strongly activate the amygdala. The fMRI showed considerably less activation of the amy...

Genomics researchers discover protein deficit that causes drug toxicity

...scribed this genetically variable response and the danger it presents over 20 years ago, no one had been able to explain the cellular mechanism behind it. ...

How HIV disables the cells' call for help

...y piece of a piece of the HIV virus, would pose no danger to patients as it lacks any ability to either infect cells or to reproduce. Rather, as the scientists note in their paper, the study of a destructive virus may contain important lessons on how to regulate the immune system. "Perhaps," says Cohen, "we...

Trio of plant genes prevent 'too many mouths'

...r for photosynthesis. They close when there is the danger that the plant tissue may lose too much moisture. "Specialized cells open and close the stomata, much like opening and closing a mouth," says Keiko Torii, UW assistant professor of biology. Stomata too close together can't operate effectively. Unde...

UCLA scientists reveal how Nipah virus infects cells

...diseases that kill up to 70 percent of patients ?a danger level equivalent to the Ebola virus. To infect a cell, viruses must bind to a viral-specific receptor on the cell's surface in order to penetrate it. Lee's team identified a cell receptor called Ephrin-B2 as the key used by the Nipah virus to unlock...

LIAI scientists make major finding on potential smallpox treatment

...sed in the studies in order to avoid any potential danger of transmission. Dr. Crotty made the findings by studying blood samples from people who had received the smallpox vaccine. "We used new techniques that we developed that made it easier to identify and isolate antibodies from the blood of immunize...

Corn grain mould used as pesticide

...the non-toxic mould for use en masse. There is no danger of additional damage as a result of 'inoculating' the fields with mould, it is claimed. "It can scarcely be prevented that maize or nuts will be infected to a certain extent with brown mould," Sebastian Kiewnick emphasises. "We can only influence whi...

No single gene for ageing

... energy to get food, produce offspring and survive danger - not to repair and maintain cells. So the maintenance system in the body slowly breaks down. This topic was of great interest at the seminar for ageing at the conference "Functional genomics and disease" taking place in Oslo, Norway. Thomas Kirkwo...

Scientists get first glimpse at how plants, most animals repair UV-damaged DNA

...g said. But even within that short time, there's a danger of the donated electron jumping back to the photolyase enzyme before the repair is done. Zhong's work has revealed how the water in the pocket performs a critical function at this point. When the photolyase enzyme becomes excited, it jostles the wa...

Preventing a pandemic: Study suggests strategies for containing a flu outbreak

...matched vaccine could be produced," she said. The danger of avian flu is that the virus could develop into a new strain that could be transmitted among humans. The virus might mutate, or it might jump over to a human already infected with the flu and then mix, or "reassort," with the human flu virus. Becau...

Tropical dry forests receive international recognition

...nder threat--the tropical dry forest is in as much danger as its popular cousin yet its grave situation cont...s a mystery to me why, when both ecosystems are in danger one is ignored over the other." Tropical dry forests once made up 42 per cent of all forests in the...

Chernobyl: The true scale of the accident

...ll-being, coupled with an exaggerated sense of the danger to their health from radiation exposure and a belief in a shorter life expectancy. Anxiety over the health effects of radiation shows no signs of diminishing and may even be spreading. Life expectancy has been declining across the former Soviet Union...

Dangerous tricksters: Some bacterie use immune cells to reproduce

...s nothing left of the bacterium, and the potential danger has been eliminated. Multiplication inside the killer This is what normally happens. However, a whole range of pathogens have become specialised in tricking this very part of the defence mechanism and survive or even multiply in these macrophages...

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