system 2 2

Tag: "system" at biology news

Physicist cracks women's random but always lucky choice of X chromosome

...hromosomes. Examples of this range from the immune system to our olfactory apparatus. Coming at the problem from the perspective of a physicist Dr Nicodemi has found an explanation for the random selection based on thermodynamics. Research has already shown that at the key moment in this process both X c...

ASU research shows connection between testosterone, dietary antioxidants and bird coloration

... an antioxidant in the body, which improves immune system function. “Researchers in animal behavior often study what keeps sexual signals like bright colors or elaborate songs ‘honest,’ or why all individuals cannot produce them ad nausea and try to get mates,” said McGraw. “The reason typically is that...

Researchers reveal structure of protein altered in autism

...s, or synapses, through which cells of the nervous system signal to one another and to non-neuronal tissues ...ape or folding of adhesion proteins in the nervous system influence their interactions. This is another example of how research on basic biological questions,...

Progress toward an antitumor vaccine

...e completely ineffective at stimulating the immune system to form antibodies. “Immunization is only successful if the vaccine is anchored to an immunizing carrier protein by means of a spacer,” explains Kunz. This would be very easy to accomplish with polysaccharides, but turns out to be very complicated wi...

Small, self-controlled planes combine plant pathology and engineering

...s the first plant pathologist to use an autonomous system for this process. “Autonomous UAVs have distinct advantages over a sampling aircraft operated via remote control,” Schmale explained. “First, the autonomous UAVs maintain a very precise sampling path. We can establish a GPS waypoint in the center ...

Microbes at work cleaning up the environment

...ofilms collected from the Piquette Mine, a flooded system in southwestern Wisconsin. The team found that organic nitrogen was highly concentrated in all of the zinc-sulfide aggregates, indicating a high protein or polypeptide content relative to inorganic zinc-sulfide minerals. In combination with the ot...

Penn researchers link cell's protein recycling systems

...ectly challenges this thinking by showing that one system can be induced to compensate for the other. Cells ...sualize. They discovered that making the lysosomal system more or less active dramatically influenced the severity of neurodegeneration. “We found that wh...

Bacteria ferry nanoparticles into cells for early diagnosis, treatment

... be selected from many choices, this is a delivery system that can be tailored to the characteristics of the...able polystyrene nanoparticles makes this delivery system much simpler to implement than previous alternatives," Bashir said. This new delivery system also...

Plastic that grows on trees

...hey experimented with a novel non-acidic catalytic system containing metal chloride catalysts in a solvent capable of dissolving cellulose. The solvent, called an ionic liquid, enabled the metal chlorides to convert the sugars to HMF. Ionic liquids provide an additional benefit: It is reusable, thus prod...

454 sequencing identifies HIV drug resistance at early stage

...hat they have used the company’s Genome Sequencer™ system to identify previously undetectable rare drug resistant HIV variants in samples from an earlier performed clinical trial. The work, presented today by Michael Kozal, M.D. of the Yale University School of Medicine and the VA CT Health Care System, wa...

University of Pittsburgh School of Medicine researchers develop 'off-the-shelf' vascular grafts

...imal model, such as a pig, which has a coagulation system more similar to that in humans. The advantage of our approach is that the graft could utilize the patient’s own stem cells and be ready for implantation almost immediately or, at most, after a relatively short culture period. This suggests that we co...

Staphylococcus aureus hides out in cells

...he team still found viable bacteria in their model system two weeks after infection. The findings may help in understanding persistent infections, and in designing new antibacterial drugs. S. aureus has not traditionally been considered an intracellular pathogen, but the molecular details that govern it...

Research finds that circadian rhythms dominate all life functions

...hting, but it never stops. Comparing the complex system in which the genes function to an AC power grid, P...ene activity oscillates in a "finely orchestrated" system and gene expression can be impacted by daylight and darkness -- or a lack of both. For example, whil...

Blood-brain barrier breached by new therapeutic strategy

...ow trying to improve the efficacy of this delivery system and to make a stable form of siRNA that might yield even better results....

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

...n a lifetime. The immunity occurs when the immune system produces cells called lymphocytes that specifically attack and eliminate the virus at the time of infection. After the infection subsides, most of the lymphocytes die but some remain in the body as “memory lymphocytes” and protect the body from recur...

Restricting hospital-based services during SARS outbreak had modest impact

... The findings suggest that the ability of a health system to admit large numbers of affected patients during a future epidemic would be limited by continued high levels of hospital occupancy. For example, the 12% decrease in overall admissions seen during the SARS restrictions would only offset one-quarter ...

Researchers identify protein pathway involved in Parkinson disease development

... is a degenerative disorder of the central nervous system resulting from the loss of neurons in the brain th...in place to protect against oxidative damage, this system can break down in the face of environmental challenges or genetic mutations. The Emory researche...

Researchers develop buckyballs to fight allergy

... believe may be the basis of aging. “The immune system both protects us and causes harm, so we are always interested in finding new pathways to help manage the harmful effects,” said Kepley....

Revealed -- Mosquito genes that could be controlling the spread of killer viruses

The genes that make up the immune system of the Aedes aegypti mosquito which transmits dead... in new research out today in Science. The immune system of this mosquito is of great importance as scientists believe it plays a key role in controlling the...

Antarctic icebergs -- Hotspots of ocean life

...ata using the SIOExplorer-in-a-Box digital library system ( http://SIOExplorer.ucsd.edu ) and then stored the information in collections at SDSC for access and analysis by scientists now and in the future. Just getting to the icebergs was a challenge. First the scientists used satellite images to select...

1 2 3 4 5 6 7 8 9 10