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Tag: "push" at biology news

Same mutation aided evolution in many fish species, Stanford study finds

... or if evolution has other tricks up its sleeve to push organisms towards an optimal form for their environment. Other Stanford researchers who participated in the study include graduate students Pamela Colosimo, PhD, first author on the study, and Kim Hosemann; technician Sarita Balabhadra; undergraduat...

New research indicates a 'troubled' greenhouse is brewing

...ne ice due to human activities. Our little warming push could repeat the troubled times of 55 million years ago." However, Retallack says these findings indicate it is unlikely that super storms will freeze North America and Europe, as depicted in the recent movie "The Day After." "During the greenhouse...

Scientists discover that host cell lipids facilitate bacterial movement

...ege of Medicine. "Here the growing actin filaments push the bacterium against the membrane, forming long m...rane projections called filopodia. These filopodia push into adjacent cells and are ingested by them. The bacteria then enter the new cell and begin the cyc...

World's largest rainforest drying experiment completes first phase

...ought means that a decline in rainfall will likely push this tall, green, lush rainforest towards a shorte...clear that drought in tandem with fire can swiftly push the tall, dense rainforests of the region towards savanna scrub. The amount of carbon that could be ...

Ophthalmologists Use Artificial Silicon Retina Microchip To Treat Vision Loss

...R, insert air into the middle of the eye to gently push the retina back down over the device, and close the incisions. Over a period of 1 week the air bubble is resorbed and replaced by fluids created within the eye. According to Chow, "The use of the subretinal space to hold a device that artificially s...

Ophthalmologists implant five patients with artificial silicon retina microchip

...R, insert air into the middle of the eye to gently push the retina back down over the device, and close the incisions. Over a period of 1 week the air bubble is resorbed and replaced by fluids created within the eye. According to Chow, "The use of the subretinal space to hold a device that artificially s...

Protein offers way to stop microscopic parasites in their tracks

...belt on its underside that enables it to move. To push forward, any rotating object -- be it a belt or a ...raction, or the ability to grip onto something and push against that grip. Car wheels, for example, are sometimes given added traction in wintertime via the...

Vampire bats keep out of trouble by running

...orelimbs," Hermanson explains. Getting most of the push from their long forelimbs -- actually their wings and therefore very strong -- the bats run more like a small gorilla than a comparable four-legged creature like a mouse. They run up to about 2.5 miles per hour. Although many of the 1,100 species of ...

Wisconsin researchers identify sleep gene

...m their genome. "This told us that genetic forces push hard against this phenotype to make it ineffective," Cirelli says. "Being a short sleeper is probably not a good thing. We know that the mns mutation affects mortality, but we're not sure how." In earlier studies, Tononi's team discovered that fruit...

Rhesus monkeys can assess the visual perspective of others when competing for food

...f where others are looking. These data potentially push back the time during which our own abilities to "read the minds of others" must have evolved. Moreover, they suggest strongly a reason why these abilities may have evolved in the first place, namely for competitive interactions with others. Finally, ...

Unchecked DNA replication drives earliest steps toward cancer

...bservation is that an initiating genetic error can push a cell to divide relentlessly, leading to conditions of DNA replication stress. This stress leads to random errors in the DNA duplication process ?breaks in the DNA that disrupt genes, for example. Unless halted, this error-generating process leads t...

Purdue researchers use enzyme to clip 'DNA wires'

... in place, but weak enough to enable the enzyme to push them out of the way. "The entire strand of DNA used in this research has been stretched onto silicon oxide surfaces at lengths up to 35 microns, or millionths of a meter, and 2 nanometers wide," Kinsella said. "When coated with particles and fragmen...

Pair of cancer genes found to drive both cell migration and division

... called PIP3, which helps the cell decide where to push outward - PI3K makes PIP3 on the membrane on one side of a cell while PTEN breaks it down on the other side. But when both enzymes are missing, levels of PIP3 remain constant throughout the membrane, and the cell can't migrate properly. In experimen...

Team Invents Device For Weighing Individual Molecules

.... Roukes says his group has technology in hand to push mass-sensing technology to even more sensitive levels, probably to the point that individual hydrogen atoms can be weighed. Such an intricately accurate method of determining atomic-scale masses would be quite useful in areas such as quantum optics, ...

Study charts origins of fear

...tions Foundation is currently working with Zhuo to push for the translation of this finding into treatments. ...

Researchers find ways to turn manure into power

...iculture industry trends with the legislation will push the research to become reality, said Dr. John Swee...ed ways to convert it into energy, but this latest push of legislation and research should result in more energy projects becoming a reality, Sweeten said. ...

Researchers learn how blood vessel cells cope with their pressure-packed job

...iston-like "indenter" was programmed to repeatedly push into the underside of the membranes and retract. The 60-cycle-per-minute motion of the indenter simulated the stretching movements of a blood vessel in response to the rising-and-falling blood pressure produced by a beating heart. The researchers a...

Einstein scientists discover how protein crucial for motion is synthesised at the right place in the cell

... actin, which polymerizes into long filaments that push the cell's membrane outward to form protrusions. The team's previous work showed how newly formed actin messenger RNA molecules find their way to the cell's periphery: A protein called ZBP1 binds to the messenger RNA and "escorts" it out of the fib...

MIT researcher finds neuron growth in adult brain

...in cells look like plants sprouting together. Some push out tentative tendrils that grow around or retract from contact with neighboring cells. Dendrite tips that look like the thinnest twigs grow longer. Of several dozen branch tips, sometimes only a handful changed; in all, 14 percent showed structural ...

Men and women differ in brain use during same tasks

...wiring' of male and female brains." "We'd like to push forward in this area," added Bell, a Killam scholar at the U of A. "It hasn't been seen yet how this information can be used to help patients, but more work in this area may lead to that." ...

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