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Tag: "alter" at biology news

Using nanomagnets to enhance medical imaging

...rast agents are of two types. Magnetic ions, which alter the nuclear properties of hydrogen in water, offer...particles of thousands of atoms or crystals, which alter local magnetic fields; they provide contrast variation in a larger region but have irregular designs...

Rapid response was crucial to containing the 1918 flu pandemic

...s it replicates, and over time these mutations can alter the virus enough that older vaccines are no longer effective. With current technologies, it would take months to develop a new vaccine after the first cases of pandemic influenza appear. Nonpharmaceutical interventions may limit the spread of the ...

Female-led infanticide in wild chimpanzees

...t clear, but may stem from demographic shifts that alter sex ratios and put increased pressure on females competing for foraging areas. In their report, the authors note that the Sonso community had experienced a significant population increase in the ten years prior to the infanticide observations (42 ind...

Parasites' impact goes beyond host to affect ecosystem

...s?entire ecosystem. In the article, "Parasites alter community structure," lead author Chelsea Wood, th...ive system, then perhaps C. lingua infection could alter the abundance of this ephemeral macroalgae. The Shoals Marine Laboratory, located seven miles off...

Magnetic computer sensors may help study biomolecules

...rray could apply torsional forces strong enough to alter the structure or shape of the biomolecules. The NIST group is now working on a microfluidic chip that will accomplish this electronically, which would be a significant milestone for applications. Parallel processing of single biomolecules would b...

Scientists: As rainfall changes, tropical plants may acclimate

...ts because climate change is expected to radically alter rainfall patterns in the tropics. But it comes with a caveat: Nutrient uptake is only one of many ingredients in plant life. Other unrelated changes that accompany a warming climate could still affect plant distribution and growth, such as those that...

How brain pacemakers erase diseased messages

... to day. "In the case of tremor, physicians can alter the setting until they see the symptoms stop," Grill said. "You don't have to know how it's really working. "In a condition like epilepsy, however, it's extremely unlikely that a person would have a seizure in the doctor's office," he said. "There...

Prey not hard-wired to fear predators

... “It is not just changes in climate or disease may alter our big remote wild landscapes, but so do the actions of conservationists and public agencies by restoring ecosystems to bring native carnivores back to where they once thrived.” said Dr. Berger. Berger’s study, which looked at 19 areas including...

Marine phytoplankton changes form to protect itself from different predators

...more remains in the surface waters. “This could alter the flow of energy and nutrients from deep to shallow, depending on what might be trying to eat it, and how the organism responds to the chemical signals of what’s attacking it,” Hay said. Experimentally, the researchers attempted to separate the ...

Researchers reveal structure of protein altered in autism

...y. “The work suggests that genetic mutations that alter the shape or folding of adhesion proteins in the nervous system influence their interactions. This is another example of how research on basic biological questions, such as the three-dimensional structures of proteins in the brain, can yield valuable...

Hormone helps mice 'hibernate,' survive starvation

A key hormone enables starving mice to alter their metabolism and “hibernate” to conserve energy, revealing a novel molecular target for drugs to treat human obesity and metabolic disorders, UT Southwestern Medical Center researchers have found. The starvation-fighting effects of the hormone...

Nicotine rush hinges on sugar in neurons

...d. The water molecule may enable the receptor to alter its shape in counterbalance to the bending hinge, said Chen, who explained, “Think of it as a lubricant.” Previously studied “homologs” of nAChR – proteins that share its structure but not its signaling function – are entirely hydrophobic, Chen sai...

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