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Tag: "depend" at biology news

Race to halt global amphibian crisis boosted by rediscovery of endangered Colombian frogs

...nsures a clean water source for coastal towns that depend on two watersheds that have their sources at the site ...

How the US drug safety system should be changed

...number of patients. Removal of label caveats would depend on the outcome of subsequent studies and their findings, depending on the numbers of individuals in the studies, and the risk and novelty of the drug, as well as addressing all premarketing safety questions. "The current system is moving toward a de...

Study defines effective microbicide design for HIV/AIDS prevention

...to future generations of microbicides will largely depend on the delivery system and applicators." However, he added, advances made through continued research on new and better drugs should not be discounted. In addition to their role in drug delivery, microbicide formulations can act as physical barriers...

Free radical cell death switch identified

...es of cells over time. Humans and other organisms depend on oxygen to produce the energy required for cells to carry out their normal functions. A cell's engine, the mitochondria, converts oxygen into energy. But this process also leaves a kind of exhaust product known as free radicals. When free radica...

Beauty and the brain

... Science, suggest that judgments of attractiveness depend on mental processing ease, or being "easy on the mind." "What you like is a function of what your mind has been trained on," Winkielman said. "A stimulus becomes attractive if it falls into the average of what you've seen and is therefore simple f...

Report highlights change in Canada's forests

...s. "The future health of the forest industry will depend on how well we care for this resource, how efficient we are in its use, and how forward-looking we are at identifying product and market opportunities," said Minister Lunn. "Canada's New Government is committed to helping the Canadian forest industry...

High dopamine transporter levels not correlated with ADHD

...that there is a dysfunction in brain circuits that depend on the neurotransmitter dopamine to modulate attention, motivation, and interest. If, for example, ADHD subjects have elevated levels of dopamine transporters ?proteins on dopamine-producing cells that take up excess dopamine ?they could end up with ...

Ocean temperature predicts spread of marine species

...r endangered species, survival of some animals may depend on whether offspring from parents in one protected area can get to another area where they are safe from harvest. "In warmer waters, marine protected areas may need to be closer together than in colder water, since in warmer water dispersal distances...

Most widely used organic pesticide requires help to kill

...luence. Virtually all animals, including humans, depend on the interplay of numerous species of bacteria that, beginning at birth, routinely colonize the stomach and intestines. The caterpillars of moths and butterflies, for example, have anywhere from seven to twenty species of gut bacteria. Humans have ...

Batfish to the rescue!

...makes them attractive to spear-fishers, while they depend as young fishes on coastal mangroves which are in decline in many areas. "Indeed, the resilience of inshore GBR reefs may be closely tied to the fate of mangroves and their suitability for batfish recruitment." Batfishes may be one of the last ...

Bacteria that use radiated water as food

...rmanent -- apparently millions of years old -- and depend not on sunlight but on radiation from uranium ores for their existence. Coauthors of the present paper learned of a new water-filled fracture inside a South African gold mine near the Johannesburg metropolitan area and viewed it as an opportunity t...

Otherworldly bacteria discovered two miles down

...of the few ecosystems found on Earth that does not depend on energy from the Sun in any way. The discovery, ...k places where sunlight doesn't reach, life has to depend on other energy sources. Other communities of "chemoautotrophs"--a word chained together from Greek ...

Effective HIV control may depend on viral protein targeted by immune cells

...m’s ‘killer?T cells against infection with HIV may depend on exactly which viral protein is targeted, according to an international group of researchers. A new study finds that HIV-infected individuals in whom virus-specific CD8 T cells are targeted against the Gag protein have lower viral levels than do t...

High-throughput oncogene mutation detection in human cancers by mass spectrometry-based genotyping

...expression tests now being developed. "Those tests depend on gene expression while this one looks directly at problems in the genome," Dr. Garraway said. ...

Geneticists discover genes that make fruit fly hybrids sterile

...uller model also proposes that these evolved genes depend on each other to cause hybrid incompatibilities. However, when Barbash and his colleagues cloned each gene and inserted an Lhr gene from D. simulans into D. melanogaster , the two genes did not interfere with each other in the engineered D. mel...

Replacing insulin is top-ranked breakthrough foreseen for health in developing world

...t to adopt therapies developed first elsewhere may depend both on their economic position and on the level of research attention a particular regenerative medicine application is receiving in industrialized nations. However, as highlighted in the 2005 report of the UN Task Force on Science, Technology, and...

Researchers identify new weapon to fight deadly bacterial sepsis

...disastrous effects on the lungs and kidneys, which depend on efficient blood circulation. Srivastava, le... are so many inflammatory signaling processes that depend on this enzyme, and so it made sense to look into with regard to sepsis, which we knew was a runaway...

Global changes alter the timing of plant growth, scientists say

...plant diversity and negatively impact animals that depend on those plants." Satellite images in recent years have revealed that some regions of the globe are "greening" earlier in the spring--another signal that the Earth is responding to overall warming. The results of this study also showed that plant g...

'Protecting virus' offers instant flu protection and converts flu infections into their own vaccines

...d possibly longer). Existing vaccination methods depend on stimulating the body's immune system, so that white blood cells produce antibodies that attach to the surface of the virus and start the process of killing it. This works well for many diseases, such as smallpox, polio and measles, but is much le...

Early-stage immune system control of HIV may depend on inherited factors

...during the earliest phases of infection appears to depend on both the specific versions of key immune-system molecules called HLA Class I that have been inherited, as well as on the fragments of viral protein those molecules display to the T lymphocytes that usually destroy infected cells. In a report in t...

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