Tag: "themselves" at biology news

NAFTA arbitrators in environmental case agree to formal public input, a first for trade hearings

...dollar corporate lawsuits. Governments could find themselves required to compensate firms harmed by new environmental regulations on the grounds they amount to "expropriation" under Chapter 11. The IISD has recommended that NAFTA member countries, without reopening the agreement itself, draft a statement inter...

Research news from Tufts University, Friedman School of Nutrition Science and Policy: February 2004

...top smoking but those who do continue to smoke put themselves at high risk if using high doses of beta-carotene." Beta-carotene is still promising as an anti-cancer nutrient, but the protective dose seems to be best obtained from dietary sources such as fruits and vegetables at natural levels. "Experiments hav...

Rare ant may help solve some mysteries of social evolution

...utissimus queens move into a new colony and attach themselves to host queens. But researchers aren't sure how L. minutissimus moves from colony to colony, as it apparently lacks the worker ants that, in other species, are responsible for scouting out new dwellings. "L. minutissimus is highly specialized because...

Gene predisposes infants to neurologic injury after heart surgery

...iant may decrease the ability of neurons to repair themselves following open heart surgery, with the result that children score lower in developmental evaluations of psychomotor skills. The study was published in the December issue of the Journal of Thoracic and Cardiovascular Surgery. "As surgical and medic...

Signal chemical primes plants for pest attack

...rve as a primer to prepare nearby plants to defend themselves against insect attack, according to a team of researchers. "We know that when caterpillars chew on plants, eventually the plants produce chemicals attracting wasps that are the natural enemy of the caterpillar," says Dr. James H. Tumlinson, the Ralph...

Global warming may cause songbirds to avoid certain foods

...eat herbivorous insects like caterpillars may find themselves without enough to eat as atmospheric CO2 levels increase. In short, chemicals in the caterpillar's food influences the likelihood of predation by birds." In addition, he said that if birds avoid feeding on gypsy moth caterpillars, for instance, an ...

Understanding urinary tract infections

...ein. The movies show the bacteria rapidly changing themselves and their interactions with each other to collectively hijack bladder cells and use them as safe havens for replication. "It just boggles the mind what these bacteria can do, in terms of sensing and responding to their environment and each other," sa...

Bridging the gap between genetics and motivations to drink alcohol

...derstanding how distal genetic influences manifest themselves in variables that are known to be proximal to drinking," said Sher. "Presumably, there are many intermediate links between genes and self-reported motivations to drink, and drinking motivations are undoubtedly closer to the alcohol-use disorder phen...

Purdue chemist 'mussels' in on secrets of natural adhesives

...found the glue that saltwater mussels use to affix themselves to rocks is a subject worth sticking to, both for ...this fashion. Wilker said that mussels can affix themselves to nearly any surface, including Teflon, the same substance used to make non-stick coatings for fryi...

Researchers seek to clone 'mad cow disease' resistant cattle strain

... explains Eyestone. Those microorganisms reproduce themselves to cause disease in fairly conventional ways, eith..., are long chains of amino acids that fold in upon themselves in predictable patterns and shapes that result from the bio-electrical relationships that exist betw...

Endurance of plants under quartz rocks possible model for life on early Earth, Mars

...presented a paradox, because chlorophyll molecules themselves normally begin to degrade at about 167 degrees, according to Schlesinger, who is a biogeochemist and ecologist. "Either they have some special kind of chlorophyll, or they were in a resting phase which bacterial groups can go into to get through real...

Genetic master switch sends bacteria toward 'seafood dinner'

...undersea meals? How do these microorganisms attach themselves to the chitin? How do they degrade the tough material and turn it into food? During the past decade, Roseman and his colleagues have made several advances in answering these questions. In the new PNAS paper, Li and Roseman reported that they had i...

EGFR: A molecular lab rat let loose in systems biology

...pt at either shutting out the signal or convincing themselves they are in the right place. "How do we hammer the proper signal through to a cancer cell? What parts of the network say 'live,' and what parts say 'die.' We have to find a way to make that decision process come out the way we want it to go. We h...

Scripps Research receives $3 million anonymous donation

...nter's private funding will enable the researchers themselves to determine how best to direct their efforts. The center will maximize the effectiveness of the funding by attracting additional public and private grants to conduct research on alcoholism and the brain. Center to Build on Scripps' History of Addi...

Emerging frontiers genomics grant for blue-green bacteria

...form. To do that, some regular Nostoc cells switch themselves into a different type of cell specialized for nitrogen fixation. A number of non-crop higher plants form associations with Nostoc to take advantage of its nitrogen-fixing abilities. Those plants direct the bacterium to make more nitrogen-fixing cell...

New method of identifying and isolating stem cells developed

...in how different adult stem cell types distinguish themselves from their own progeny," Fuchs explains. "Previously we knew of just a handful of proteins that distinguish skin stem cells from their progeny, and now we know of more than 100," says Fuchs. "The laboratory is now working to understand how these prot...

Plant immune system's 'take two aspirin' gene, offers hope for disease control

...ion to undergo programmed cell death and sacrifice themselves for the benefit of the rest of the plant. SABP2 a...at the site of the attack as plant cells sacrifice themselves for the overall survival of the plant," Klessig explains. "We believe programmed cell death helps re...

Abandoned penguin colonies may help refine Antarctic climate studies

...then the birds will abandon a colony and establish themselves elsewhere. Emslie said data collected by his team allow him to make a strong case that Adelies abandoned the entire southern Ross Sea for almost 1,000 years, from roughly 2000 to 1000 years ago. The analysis also indicates that the large Adelie pen...

Genetic info of cloned pigs may help babies before birth

...tly weaned and are in excellent health. The births themselves are not particularly remarkable for Piedrahita, since he has cloned animals in previous research projects it's the benefits to animal and human health that are noteworthy. Piedrahita is investigating instances of damage to genes during cloning, dama...

Easily paralyzed flies provide clues to neurodegeneration

...s found in some of Ganetzky's fly mutants manifest themselves in humans suffering from such afflictions as epilepsy and cardiac arrhythmias. "Each fly (mutant) is a door or a window into some biological activity I want to understand," Ganetzky notes. "When those activities are perturbed because of a m...

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