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Endosome-mediated signaling in plants

... signaling into the plant kingdom. The researchers show that the growth-promoting brassinosteroid receptor (BRI1) is trafficked through endosomes to enhance activation of this growth response pathway, which affects both shoot and root growth. Dr. Chory is hopeful that these results “will serve as a s...

How 'memory' T cells curb the spread of viruses throughout the body

...author of the study. The Fox Chase experiments show that memory CD8 T cells rapidly multiply and kill target cells inside the lymph node. “In fact we found that memory CD8 T cells already killed target cells in the lymph node and decreased viral spread to the liver and spleen when the virus just b...

Researchers identify protein pathway involved in Parkinson disease development

...Parkinson disease development. These new findings show how the mutations affect cellular function and could provide a target for drug therapies to treat the disease. The research by a team of Emory University scientists will be published June 18 in the Public Library of Science Biology (PLoS Biology) jo...

Prey not hard-wired to fear predators

...edators, the elk, moose, bison and caribou did not show the kind of vigilance, clustering behavior and flight observed in the same species living with wolves, bears or tigers. For example, elk in the mountains of Siberia—who subsist alongside tigers, wolves and bears-- responded five times faster to the...

CU study reveals why starling females cheat

... mating strategies. "This is the first study to show that individuals from the same population mate with extra-pair males and gain both direct (like additional helpers) and indirect benefits (like better genes for the offspring), but that they do so in different contexts," said Dustin Rubenstein, a for...

Surprising origin of cell's internal highways

... followed the tracks back to their origin. "We show that not only the centrosome, but the Golgi also makes microtubules," Kaverina said. "And unlike centrosomal microtubules, which are radial and symmetric, these microtubules are directional." They found that microtubules originating at the Golgi a...

Researchers develop buckyballs to fight allergy

..., Roanoke, Va., research company, are the first to show that buckyballs are able to block allergic respons...tial fullerenes have, however, we are the first to show they can turn off the allergic response and basic immune reactions,” he said. According to Kepley...

Male circumcision overstated as prevention tool against AIDS

... It is not surprising that computer models rarely show the virus reaching epidemic proportions; it is very hard to transmit this illness heterosexually. Only when model building researchers introduce a highly sexually active infected subset of “prostitutes” to their mathematical models does the infection...

Gene therapy study shows safety and statistically significant improvement in Parkinson's disease

..., while prior studies of AAV-mediated gene therapy show that gene expression gradually increases to a maximal level over a period of weeks. “We are very encouraged by the results of this trial and its publication in such a prestigious journal,” said John Mordock, Neurologix President and Chief Executi...

Scientists close in on missing carbon sink

...n plants take in more carbon. The aircraft samples show that northern forests absorb only 1.5 billion tons of carbon a year, which is almost 1 billion tons less than the estimate produced by the computer models. The scientists also found that intact tropical ecosystems are a more important carbon sink ...

Putting feelings into words produces therapeutic effects in the brain

...ists see a robust amygdala response even when they show such emotional photographs subliminally, so fast a person can’t even see them. But does seeing an angry face and simply calling it an angry face change our brain response" The answer is yes, according to Matthew D. Lieberman, UCLA associate profe...

New vaccine prevents CMV infection and disease in mice

...er in utero, and 15 percent of those children will show symptoms such as hearing loss, mental retardation, motor or learning disabilities. Because the host’s natural immune system can protect from the disease but can’t rid the body of the virus, people remain infected and can become re-infected or infec...

'Virtual autopsy' helps identify drowning as cause of death

... that are indicative of drowning. "Our findings show that MDCT can be used either to facilitate or reduce the need for conventional autopsy when drowning is the suspected cause of death," said lead author Angela D. Levy, M.D., from the Department of Radiology, Uniformed Services University of the Healt...

New research shows sharks use their noses and bodies to locate smells

...ne 1 issue of the Journal of Experimental Biology, show that this shark is severely handicapped in its ability to locate the source of an odor when deprived of information from its lateral line, particularly in the dark. According to Atema, since most odor plumes disperse in patches, fish locate odor ...

Moths mimic sounds to survive

...f Sciences, the study is the first to definitively show how an animal species uses acoustic mimicry as a defensive strategy. The research was conducted by Jesse Barber, a doctoral student in biology at Wake Forest. William E. Conner, professor of biology at Wake Forest, co-authored the study. In re...

Arctic ice retreating more quickly than computer models project

...considered more reliable than the earlier records, show that the September ice actually declined at a rate of about 7.8 percent per decade during the 1953-2006 period. "This suggests that current model projections may in fact provide a conservative estimate of future Arctic change, and that the summer ...

'Personality-gene' makes songbirds curious

...specific variant of this dopamine receptor D4 gene show a stronger exploratory behaviour than individuals with other variants (Proceedings of the Royal Society London B, 2 May 2007). There is already evidence that variations (polymorphisms) in neurotransmitter-related genes are associated with personal...

pHLIP, a novel technology to locate and treat tumors

...the National Academy of Sciences. The researchers show that, the protein fragment, called “pHLIP?(pH (Low) Insertion Peptide) can be injected into the abdomen of a mouse, find its way into the blood and then specifically accumulate in tumors. Within 20 hours after injection of labeled pHLIP, the molecul...

Chronic fatigue syndrome impairs a person's slow wave activity during sleep

... first four non-REM periods each night in order to show comparability, revealed that SWA, or other sleep E...sults are very different. Depressed women did not show a blunted SWA response to sleep challenge. The present CFS study included only women, and none had ...

Role of noise in neurons

...y of thin axons for transmitting information. They show that noise effects in ion channels in the brain ar...a few milliseconds of real time in the brain. They show how conduction along such thin axons is affected by the probabilistic nature of voltage-gated ion ch...

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