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Tag: "tune" at biology news

NYC's First Rapid HIV Drug-resistant AIDS Case Prompts Call to Step Up HIV Prevention

...ficials, medical providers and AIDS groups to fine tune and develop aggressive, ongoing and innovative HIV prevention programs with a particular emphasis on targeting high-risk populations," said Michael Weinstein, AIDS Healthcare Foundation President. "Clearly men who have sex with men continue to be at ...

Bird Brains Show How Trial and Error May Contribute to Learning

The adult male zebra finch knows only one scratchy tune learned in its youth, which it performs repeatedly... stimulating the LMAN had an immediate impact. The tune and rhythm of the basic song did not change, but a tiny burst of electricity would show up a few not...

Depression gene may weaken mood-regulating circuit

... 'Are the violin and the clarinet playing the same tune and to what extent might this gene account for it?'" In this case, it turned out that the amygdala, a fear processing hub deep in the brain and the cingulate, an emotion-dampening center located near the front of the brain, were playing a duet under...

MicroRNA tweaks protein that controls early heart development

...led microRNA ?a chemical cousin of DNA ?helps fine tune the production of a key protein involved in the early development of heart muscle. The findings, available in the online edition of the journal Nature, may aid scientists in their understanding of how a progenitor cell, or stem cell, decides to beco...

Corn grain mould used as pesticide

...e BMZ) is supporting the project until 2006 to the tune of a total of 1.2 million euros. The researchers have made an important advance: "We have examined 3,000 isolates in all and have come across several promising strains," Sebastian Kiewnick states. "Now we'll soon be conducting the first field trials....

Color perception is not in the eye of the beholder: It's in the brain

...ied retinal structure. Each subject was asked to tune the color of a disk of light to produce a pure yellow light that was neither reddish yellow nor greenish yellow. Everyone selected nearly the same wavelength of yellow, showing an obvious consensus over what color they perceived yellow to be. Once Wi...

Grasshopper love songs give insight into sensory tuning

...t. A major question in neurobiology is how neurons tune the strength of their interconnections to optimally respond to such inputs. Neuronal circuitry consists of a web of neurons, each triggering others by launching bursts of neurotransmitters at targets on receiving neurons to produce nerve impulses in...

Tropical dry forests receive international recognition

...Change Research has just funded the network to the tune of US$2.7 million for the U of A and all the contributing Latin American partners. The U of A will receive $1.1 million of the grant. TROPI-DRY members come from the United States, Cuba, Venezuela, Costa Rica, Panama, Brazil, Mexico, and Canada. "...

Multiple genes permit closely related fish species to mix and match their color vision

...nsitivity. The researchers showed that in order to tune its color vision, each cichlid species primarily expresses three of the seven cone pigment genes encoded by their genomes. It is not clear why such closely related cichlid species have evolved such different visual sensitivities, but the sensitiviti...

Sperm stem cells closer to being like embryonic stem cells

...nd physiology studies, and its behavior is more in tune with that of humans in many cases. It's also important to be able to produce pluripotent rat cells, because we would then have another animal model to test stem cell-based therapies, such as correcting diabetes." One of the next steps is to determin...

PET imaging reveals the immune system at work

...e results of experiments that enabled the group to tune in to the cellular battles waged by the immune system deep in the body. Using positron emission tomography or PET, Witte and his colleagues were able to observe key cells of the immune system as they responded to tumors in mice. "We know we can use ...

Jefferson biologist coaxing human embryonic stem cells to make dopamine with simpler, faster method

...e results of experiments that enabled the group to tune in to the cellular battles waged by the immune system deep in the body. Using positron emission tomography or PET, Witte and his colleagues were able to observe key cells of the immune system as they responded to tumors in mice. "We know we can use ...

'Uniquely human' component of language found in gregarious birds

...micry. One starling famously copied an unpublished tune that Mozart whistled in a pet store; the composer purchased the bird and kept it as a pet. The starling is mentioned only once in all of Shakespeare, but in that passage an angry warrior, forbidden by the King to speak of a rival, Mortimer, decides h...

The closest look ever at the cell's machines

...may only need to produce few parts to switch on or tune the machine. On the other hand, if something shouldn't happen, it may only need to block the production of a few molecules. Patrick Aloy and Rob Russell at EMBL used sophisticated computer techniques to reveal the modular organisation of these cellu...

Dissecting the machinery of nicotine's reward

...nd acetylcholine, the a7 subunit would more finely tune the response of these neurons, they concluded. ...

Better sludge through metagenomics

...net. When it works, it is a microbial symphony in tune with humanity. When it fails, the consequences can be dire. Researchers from the U.S. Department of Energy Joint Genome Institute (DOE JGI) and collaborators at the University of Wisconsin-Madison, and the Advanced Wastewater Management Centre, Uni...

Slow brain waves play key role in coordinating complex activity

...phase, it becomes much easier for these regions to tune in the high-gamma oscillations that transfer information between them. "One theory about how the brain is organized says that there is a hierarchy of oscillations that can control how one neuron talks to another neuron, or how one brain area talks t...

Archerfish tune their shots to universal properties of prey adhesion

...hers have discovered that archerfish automatically tune the force they use to dislodge prey according to p...ed that for any given size of prey, the archerfish tune their attacks such that prey are hit with about ten times the force that adhesive organs of animals ...

Faster, low cost sequencing technologies needed to drive era of personalized medicine

...eir jaw at the sight of the bill -- to the current tune of $10 million or more charged for every human or mammalian-sized genome sequenced. Now, with a grant award from the National Human Genome Research Institute (NHGRI), scientists at the Biodesign Institute at Arizona State University are expanding ef...

Nanoparticles can track cells deep within living organisms

...beling technologies under development. "We can tune an MRI scanner to the specific frequency of the fluorine compound in the nanoparticles, and only the nanoparticle-containing cells will be visible in the scan," he says. "That eliminates any background signal, which often interferes with medical imag...

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