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Tag: "connecting" at biology news

Newborn neurons like to hang with the 'in' crowd

...als from other brain cells they wither and die. By connecting to functional synapses, the newborn neurons ensure that they are not reaching out to deadbeats. The Gage lab previously identified a subunit of the NMDA receptor, a protein complex that transduces signals sent by neighboring cells, as the newborn ...

Deconstructing brain wiring, one neuron at a time

... tracer that can tease apart the chain of directly connecting neurons, identifying them one by one. Viruses t...s to infect targeted cells and spread only once to connecting cells," he adds. The wiring map can be constructed step by step as subsequent populations of cells a...

MIT's ocean model captures diversity of underwater forests

...s a new cross-disciplinary research project at MIT connecting systems biology, microbial ecology, global biogeochemical cycles and climate. "The guiding principle of our model is that its ecosystems are allowed to self-organize as in the natural world," said Follows, a principal research scientist in MIT's ...

Newborn brains grow vision and movement regions first

... of tissue called white matter, which contains the connecting fibers between neurons in different brain regions. Gray matter size grew by roughly 40 percent in the first months after birth, while white matter grew very little. "This pattern of brain growth in newborns has not been described before," said Dr....

New study sheds light on 'dark states' in DNA

...use damage? That's the Holy Grail in this field -- connecting our growing knowledge of the electronic states of DNA with the photoproducts that damage it," he said. ...

Brain networks strengthened by closing ion channels

...low the information to pass through into the cell, connecting the network. These receptors are stimulated by a natural brain chemical norepinephrine or by medications like guanfacine. "Guanfacine can strengthen the connectivity of these networks by keeping these channels closed, thus improving working memo...

'Terror bird' arrived in North America before land bridge, study finds

... land bridge that formed about 3 million years ago connecting North and South America," said MacFadden, a curator of vertebrate paleontology at the Florida Museum of Natural History at UF. "But the rare earth element analysis of a fossil Titanis bone from Texas determines its age to be 5 million years old. This...

MIT's ocean model precisely mimics microbes' life cycles

...s a new cross-disciplinary research project at MIT connecting systems biology, microbial ecology, global biogeochemical cycles and climate. "The guiding principle of our model is that its ecosystems are allowed to self-organize as in the natural world," said Follows, a principal research scientist in MIT's ...

Human stem cells delay start of Lou Gehrig's disease in rats

...to nerve cells, and many of those grew new endings connecting to other cells in the rat's spinal cord. "These stem cells differentiate massively into neurons," says Koliatsos, "a pleasant surprise given that the spinal cord has long been considered an environment unfavorable to this type of transformation." ...

Mass vaccination unnecessary in the event of a large bioterrorist US smallpox attack

...se such as smallpox requires much more than simply connecting dots on a map. Instead Longini and colleagues rely on a tool called stochastic modeling to take into account real-world unpredictability, as well as many factors about the disease and the affected population. In constructing these models, Longini and...

Matrilin-3 gene discovered to prevent onset of osteoarthritis

...e of BMD and joint cartilage degeneration, thereby connecting these two events together." Researchers could not make the connection, however, between a lack of matrilin-3 and skeletal disorders, such as MED. The mice lacking matrilin-3 developed a higher incidence of osteoarthritis in adulthood without develo...

Queensland scientists identify molecule that links both sides of the brain

...rding development of the corpus callosum, the main connecting nerve tract that shuttles information between the left and right hemispheres of the adult brain. Using a mouse model, neuroscientists at The University of Queensland ?working with Associate Professor Steven Stacker and his team at the Ludwig Instit...

Ancient global warming drove early primates' dispersal

...merica and traveled across a temporary land bridge connecting Siberia and Alaska. A third hypothesis is that primates had their origins in Africa or Asia and traveled through North America to reach western Europe. Finally, it has been suggested that the group originated in Asia and fanned out eastward to North ...

Novel connection found between biological clock and cancer

...xpression of the period-4 gene. This closes a loop connecting the clock to period-4 and period-4 to the clock and the cell cycle. The clock normally modulates expression of this gene that encodes an important cell cycle regulator, and that cell cycle regulator in turn affects not only the cell cycle but also th...

One fish, two fish: New MIT sensor improves fish counts

...so found among other animals, with a thin "bridge" connecting the two ends. The researchers also observed that the same shapes seen in a small scale appear on larger scales - tens of meters vs. tens of kilometers - displaying a fractal pattern. Population density patterns could be a means of communication, Mak...

Getting close to nature is good for you

...g outdoors and to feeling part of a greater system connecting beyond the individual. Such projects can help overcome social isolation, develop skills, and improve employment prospects, as well as provide the known benefits associated with exercise. Although initial research has been promising, the UK needs rob...

Brain networks change according to cognitive task

...mpares the brain networks to a network of highways connecting different parts of a city. The highway is static. No matter how heavy the traffic load, it always has the same number of lanes. In the brain, there is a dynamic change that allows certain pathways to preferentially facilitate the demands of a given c...

'Underground' tunnels discovered as means for communication between immune system cells

...onder if there was some sort of physical structure connecting only those cells that discharged. A literature search turned up a handful of papers describing tunneling nanotubules, and further imaging using the highest magnification possible disclosed their presence in both the dendritic cells and macrophages. ...

Beetle-inspired switch uses water for bonding

...so create large effects from many tiny switches by connecting them in various arrangements, Steen said. "This new technology bridges the gap between scales as large as our hands and nanoscales," said Steen. "We need devices that allow us to communicate between the two scales." Co-authors include Michael Vo...

Going To Extremes To Improve Human Health

...sense of the explosion of available information by connecting these discoveries to integrative physiological functions in the intact human being," Halliwill said. ...

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