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Growth in the sea comes down to a struggle for iron

...with equipment and supplies, ready for an extended stay at sea. Its subsurface pontoon hull give it more stability in choppy seas, a benefit to Wells who normally gets seasick on these voyages. For nine days, she steamed northwest to rendezvous with a research vessel from the University of Tokyo, the Hak...

Genome of deadly amoeba shows surprising complexity, evidence of lateral gene transfer

...ne system. This could explain why the parasite can stay hidden in the body for years at a time. Such information may help researchers find better means to harness the immune system to eradicate infection through vaccine development. A number of the metabolic adaptations and stratagems identified from the...

Solution to Pollution: New Bacteria Eats Toxic Waste

...rt and through these unique bacteria the world may stay a little cleaner, said Sims. ...

Scientists discover how fish evolved to float at different sea depths

...sh have evolved over the last 400 million years to stay motionless at different water depths. A research team led by Dr Michael Berenbrink, a Comparative Physiologist at the School of Biological Sciences, has revealed how modern fish, such as pike and cod, have developed a way of floating at certain wate...

Researchers devise way to mass-produce embryonic stem cells

.... The cytokines essentially tell the stem cells to stay in their undifferentiated state. The difference between growing stem cells in a flask vs. the bioreactor is that the cells grown in the bioreactor could grow in three dimensions, while cells growing on a flat surface ?the bottom of the flask ?could ...

Flocking together: Study shows how animal groups find their way

...es naturally from two basic instincts: the need to stay in a group; and the desire by some individuals to ...ammed their simulated animals with a basic urge to stay near others, but not collide with them. This instinct alone caused individuals to form close-knit, e...

Key mechanism in genetic inheritance during cell division identified

...f proteins, called kinetochores, can recognize and stay attached to microtubules, hollow fibers in the walls of biological cells that are responsible for the faithful segregation of chromosomes during cell division. "In test tube experiments, we've found that the kinetochore proteins form rings around th...

Buying Time Through Hibernation on Demand

...xibility. It's what allows our core temperature to stay at 98.6 degrees, regardless of whether we're in Alaska or Tahiti," Roth said. In addition to mice, Roth and colleagues in previously published work have demonstrated the ability to metabolically arrest ?and subsequently re-animate ?such model organi...

U-M team recovers ancient whale in Egyptian desert

...xibility. It's what allows our core temperature to stay at 98.6 degrees, regardless of whether we're in Alaska or Tahiti," Roth said. In addition to mice, Roth and colleagues in previously published work have demonstrated the ability to metabolically arrest ?and subsequently re-animate ?such model organi...

Brain-mapping technique aids understanding of sleep, wakefulness

...ce a person wakes up and moves around, he tends to stay awake. "We all know subjectively and objectively ...y once you're awake and moving around, you tend to stay awake, a process called activity induced consolidation of wakefulness. Some neurons in the basal fo...

To sea or not to sea: When it comes to salmon sex, size sometimes doesn't matter

The ones that stay and the ones that stray are biological puzzles among Pacific salmon, of whom the vast majority ?but not all ?travel thousands of miles to sea and back to the streams where they hatched. There are chinook salmon populations in Idaho in which an occas...

Secret of smallpox's success may lead to bioterror cure

...lves from mammalian immune systems. The ability to stay hidden allows the smallpox virus, in particular, t...particles, they don't even get sick -- the animals stay healthy," notes Jacobs. "The body reacts and it fights off both the mutant, and also the normal vir...

While on trail of dioxin, scientists pinpoint cancer target of green tea

...inds to HSP90, a protein that helps other proteins stay stable, serving the same role as a tail on a kite. When the two bind, HSP90 no longer turns on the AH receptor, stopping the cascade of events that would lead to the activation of several harmful genes. This weekend Palermo is receiving the Wallace ...

U.N. mulls the protection of Earth's forests

...the occasional hurricane or tornado, trees tend to stay put. "It's partly a matter of sovereign property rights," Auer said. "Governments will look at a forested area and say, 'This resource is mine. I don't want someone else telling me how to manage it.' Nevertheless, there are regional and global servi...

Ocean climate predicts elk population in Canadian Rockies

... bodies have to work harder and use more energy to stay warm," said Hebblewhite, who studies in the U of A Department of Biological Sciences. Cold, wet weather alone is enough to decrease an elk population, but when wolves are added to the environment, elk become especially vulnerable. Hebblewhite found ...

Small worm yields big clue on muscle receptor action

...ize animals to figure out what makes that receptor stay or make it to the synapse," she added. Richmond said the finding might have direct relevance to humans because the ACR-16 receptor is very similar to the alpha-7 nicotinic receptor in the human brain. ...

Nicotine triggers the same brain reward circuitry as opiates

...ng nicotine, finding that the mice would prefer to stay in that chamber when given a choice. The researchers found that just placing the conditioned mice in the chamber activated CREB. They also found that naloxone blocked this conditioned increase in CREB, and that mutant mice lacking CREB or pretreated ...

Hopkins scientists uncover 'tags' that force proteins to cell surface

...nds of proteins to get to the surface of cells and stay there. Two natural proteins that use one of these ...scientists have long known that proteins prefer to stay put in this factory, the endoplasmic reticulum, unless they contain specific transportation instruct...

When in danger humans are similar to a deer in the headlights

...ncestral and automatic behavior allows the prey to stay unnoticed by a potential predator. A new study published in Psychophysiology finds that humans, like many other complex animals, freeze when encountering a threat. The mere picture of an injured or mutilated human induces this reaction. When viewing ...

One bacteria stops another on contact

...apart the way dead cells do. These cells appear to stay intact, perhaps in a quiescent mode, or dormant state." Aoki explained, "We are currently exploring how contact between bacteria can inhibit cell growth �� and determining what this contact-dependent inhibition of growth (CDI) system is used for. Th...

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