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Ants Genetic Engineering Leads To Species Interdependency

...n up the ability toproduce pure-species workers in favor of the hybrids, thereby becomingcompletely dependent on one another for survival.Female ants are generally found in two forms: reproductive queens andsterile workers. The role, or caste, of an individual is determined forlife at a certain stage in he...

Rare surgery performed to remove pancreas, prevent diabetes

...e not uniformly good, so the procedure fell out of favor until recently, when new advances in cadaveric islet cell transplantation made outcomes more favorable. ...

Strongest proof yet found for prion hypothesis

...B and senior author of the paper. "The evidence in favor of the prion hypothesis was strong, but the final proof was still missing. Now we have supplied this proof." Soto emphasized that a tremendous increase in efficiency of the PMCA technology played a crucial role in the work of his team, which include...

To control germs, scientists deploy tiny agents provocateurs

... the normal characteristics of a bacterial cell in favor of new group behaviors. "It's amazing that such simple organisms as bacteria can form these super-colonies that work together in such sophisticated ways," says Blackwell. Scientists have learned that bacteria sense each other and the overall density...

Same-Sex Mating Discovered in a Toxic Fungus

...ists' general understanding of the conditions that favor evolutionary transitions between self-fertilization and sexual reproduction among unrelated individuals, known to occur in the fungal, plant and even animal kingdoms, the researchers said. Christina Hull, now at the University of Wisconsin, Madison,...

Bobbing birds do it for a reason

...me. In other words, when foraging, whooping cranes favor visual fixation. This result strongly suggests that visual fixation not only removes motion blur but also plays a critical role in permitting the detection, localization, and recognition of objects. Head-bobbing behavior, so characteristic of birds,...

Elevated temperature enhances success of viral cancer therapy

... of pharmacological agents to suppress fever would favor the tumor-selective replication of ONYX-015. This study indicates that induction of a heat shock response by pharmacological agents (that could potentially be administered systemically) or local hyperthermia, could greatly augment and broaden ONYX-01...

Elderly mice yield clues to the process of growing old

...itical cells die," says Prolla. "These experiments favor a major role for programmed cell death in aging." If true, the new insights may one day lead to opportunities to stave off old age through drugs that could prevent the gathering of genetic defects in mitochondrial DNA, genetic material that resides ...

Dendritic cells offer new therapeutic target for drugs to treat MS and other autoimmune disease

...T3, targets an immune system cell often ignored in favor of T-cell targets in standard therapies. FLT3, which controls the development of healthy blood cells, was identified as a treatment target in patients with acute myeloid leukemia, a blood cell cancer, several years ago by the same Johns Hopkins inv...

Same-sex mating by fungi spawned infection outbreak, evidence suggests

...m has only been found in the Pacific Northwest, we favor the hypothesis that the minor type represents one of two parental strains that gave rise to the major outbreak isolate," said study author James Fraser, Ph.D., also of Duke. "The second parent strain remains to be discovered." Additional examination...

Plants, too, have ways to manage freeloaders

...se results support the hypothesis that legumes can favor more cooperative rhizobia by manipulating bacterial fitness in the nodule," the authors wrote. "We think that when roots explore the soil and encounter bacteria, they will nodulate them, but then the plant will evaluate how much nitrogen it's gettin...

UCSD biologists find new evidence for one-way evolution

...s of complex trait evolution, which have tended to favor multiple reappearances of complex traits after the... Species capable of rejecting their own pollen in favor of pollen from other individuals, harbor more genetic variation than those that self-fertilize. "An...

How taste response is hard-wired into the brain

... hard-wired circuitry. Their findings, they said, favor a model for taste encoding in the brain that holds that specific cells are dedicated to detecting specific tastes. Competing models hold that multiple neurons combine information to encode taste, or that the timing of patterns of taste information en...

'Word-vision' brain area confirmed

...his colleagues "report a unique set of findings in favor of the existence of the VWFA that will surely add fuel to the debate." He concluded that "The single case study…provides compelling evidence that the VWFA plays a causal role in the chain of neural events that underlie normal reading." ...

Extinctions linked to climate change

...ted States. And predicting how climate change will favor a certain pathogen or disease transmission is extremely difficult. "We should expect the unexpected," Blaustein and Andy Dobson of Princeton University wrote in their report. "Terms such as 'enigmatic decline' and 'pathogen-climate paradox' will pro...

Stanford/Packard scientist's data-mining technique strikes genetic gold

...e showing that they have value." Butte and Kohane favor using the existing Unified Medical Language System, which consists of more than 1 million biomedical concepts, to vastly simplify the computerized sorting of the thousands of microarray experiments submitted to databases each year. Without such a sys...

Climate change drives widespread amphibian extinctions

...ng to cooler days and warmer nights, both of which favor the chytrid fungus. The organism grows and reproduces best at temperatures between 63 to 77 degrees Fahrenheit (17 to 25 degrees centigrade). The fungus kills frogs mostly in cool highlands or during winter, implying that low temperatures make it mo...

Invasive exotic plants helped by natural enemies

...at this radical shift in herbivore composition may favor exotic plants over natives. Recent research, including a paper authored by Parker in Ecology Letters last year, suggests that native herbivores actually prefer to eat exotic plants over native plants. This research proposes that since the exotic pla...

New Research Shows Artificial Light at Night Stimulates Breast Cancer Growth in Laboratory Mice

...e with internal timekeeping can tip the balance in favor of tumor development,?said Blask. “The effects we are seeing are of greatest concern to people who routinely stay in a lighted environment during times when they would prefer to be sleeping,?said Mark Rollag, Ph.D., a visiting research scientist at ...

Study shows hope for ridding lakes of clawed invader

...e trapping and manipulating fishing regulations to favor the smallmouth and rock bass that dine on juvenile crayfish. The two-pronged attack, says Carpenter, has yielded very promising results. "It seems to be working. The aquatic plants are back. That's good because that's fish habitat, and the fish pop...

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