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Tag: "sustain" at biology news

Scientists rid stem cell culture of key animal cells

...n use. Until now, scientists have had to grow and sustain stem cells through the tedious daily task of generating mouse feeder cells from mouse embryos. Feeder cells, or fibroblasts, are connective tissue cells that form the matrix upon which stem cells grow. The mouse feeder cells were an important ingred...

Open microfluidic and nanofluidic systems

...rrow channel that has a width of 100 nanometer can sustain an overpressure up to 15 atm. In contrast, if the ...h of one millimeter, the water filament could only sustain a thousandth part of an atmosphere. One relatively simple application of the morphology is obtained...

Affymetrix and the Karolinska Institutet Announce Translational Medicine Strategic Alliance

...d to risks of the Company's ability to achieve and sustain higher levels of revenue, higher gross margins, reduced operating expenses, uncertainties relating to technological approaches, manufacturing, product development, market acceptance, personnel retention, uncertainties related to cost and pricing of A...

Molecular models advance the fight against malaria

.... Investigating ways to counter the mutations and sustain the efficacy of anti-malarial drugs, Trumpower and his colleagues continued their work on previous studies using yeast enzymes to explore atovaquone resistance. It is not possible to grow enough malaria parasites to isolate and study the respiratory ...

Alaskan puzzles, monitoring provide insight about North Pacific salmon runs

...ts of streams or entire watersheds -- is needed to sustain salmon. Puzzles include Alaska's Kvichak River, the world's most important salmon-producing river. It has had runs of more than 50 million sockeye salmon in the past, which is more valuable than all the salmon in the lower 48 combined back when thos...

Researchers identify protein crucial for survival of Lyme-disease bacterium

...from replicating in the manner that they should to sustain the numbers needed to move from the midgut to the ...terium, because if you understand what it needs to sustain itself, then in theory you could disrupt that cycle by blocking whatever that mechanism is," Dr. Nor...

Microbial fuel cell: High yield hydrogen source and wastewater cleaner

...hile there is likely insufficient waste biomass to sustain a global hydrogen economy, this form of renewable energy production may help offset the substantial costs of wastewater treatment as well as provide a contribution to nations able to harness hydrogen as an energy source," Logan notes,. The new appro...

Genetic defects give the immune system the green light to attack the pancreas

...ne, their body cannot convert food into energy. To sustain life, they must get insulin through injections. The disorder can emerge in childhood, adolescence and even appear in adulthood, but the genetic stage is set beforehand. T-cells play a key role. They are part of the highly complex array of immune cel...

Cousin of Asian super termite invades Florida

...y reducing the ability of the worker population to sustain underground colonies. The chemical has a low toxicity to humans and the environment. Less than one gram kills an entire colony containing millions of termites. The control is marketed worldwide as the Sentricon Termite Colony Elimination System by D...

Woods Hole Research Center plans controlled burn in Amazon rainforest

...st interior, keeping the litter layer too moist to sustain a fire. Now large areas of forest are selectively ...e changes allow the litter to become dry enough to sustain a fire. Once a forest has burned a first time, the combination of a more damaged forest canopy and a...

Crisis in African fish supplies looms, experts warn Africa leaders

...gth or education ?a low-labour livelihood that can sustain both the poor and the growing number of HIV and AIDS affected households, especially those headed by widows and orphans. Called "rich food for poor people," fish contain combinations of proteins, vitamins and minerals that help fortify people with H...

Leptin-signaling Protein Maintains Normal Body Weight And Energy Balance In Mice

...gth or education ?a low-labour livelihood that can sustain both the poor and the growing number of HIV and AIDS affected households, especially those headed by widows and orphans. Called "rich food for poor people," fish contain combinations of proteins, vitamins and minerals that help fortify people with H...

Duke Experiments Boost Radiation's Cancer-Killing Effects

...apies more potently inhibited a tumor's ability to sustain and nourish itself by growing new blood vessels around the tumor. Most importantly, the scientists clarified how this master switch, Hypoxia Inducible Factor or HIF-1, promotes a cancer cell's ability to grow, nourish, energize and develop blood ves...

IBM Transforms the Art of Scientific Expeditions

...apies more potently inhibited a tumor's ability to sustain and nourish itself by growing new blood vessels around the tumor. Most importantly, the scientists clarified how this master switch, Hypoxia Inducible Factor or HIF-1, promotes a cancer cell's ability to grow, nourish, energize and develop blood ves...

Evolution of life on Earth may hold key to finding life in outer space

...thrive in environments once thought too extreme to sustain life. Given the intense conditions under which these microbes are able to exist on Earth, the likelihood of finding life in outer space also increases. In "Fantasy Worlds," for each type of extremophile found, animators created a parallel imaginary a...

Cattle grazing may help rather than hurt endangered species

... practical terms, this means that grazing may help sustain the kinds of aquatic environments endangered fairy shrimps need to survive," author Christopher R. Pyke states. The authors looked at 36 vernal pools on two different geologic formations on a 5000-ha ranch in eastern Sacramento County, California. ...

Marathon of nano-sprinters

...nbind, each of the remaining pulling motors has to sustain a larger force, which would mean that their unbinding probability increases even further. This leads to a cascade of unbinding processes and to a strongly nonlinear dependence of the cargo velocity on the external load force. Simi-lar cascade process...

Image of myosin-actin interaction revealed in cover story of Molecular Cell

...other myosin family proteins in that it is able to sustain this processive motion, enduring many hydrolysis cycles. The other myosins grab on tightly to actin and release after one hydrolysis cycle. "This study required a different way of thinking about image analysis. This is the first time we were able to...

Ocean 'dead zones' trigger sex changes in fish, posing extinction threat

...wn as "dead zones," that lack sufficient oxygen to sustain most sea life. Fish and other creatures trapped in these zones often die. Those that escape may be more vulnerable to predators and other stresses. This new study, Wu says, suggests these zones potentially pose a third threat to these species ?an ina...

Tiny polyps gorge themselves to survive coral bleaching

...ora can switch how it gets its food so that it can sustain itself in a bleached state much longer than can corals like Porites," she said. "While bleached Porites is limited by how much energy reserves it has, bleached Montipora is not. That's good news for Montipora and corals like it as the frequency, du...

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