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Tag: "used" at biology news

Placenta Is A Rich Source Of Blood Stem Cells

... for clinical application.'' Blood stem cells are used in treating blood cancers like leukemia and other blood diseases, and in patients receiving transplants, but growing them in quantity is difficult. The cells don't multiply readily in the laboratory, so they must be harvested from bone marrow by need...

Probing The Promise And Perils Of Nanoparticles

...rticles called polycationic polymers—already being used to deliver drugs and genes—to see if they behaved ...es. Both Leroueil's work and the earlier research used model membranes to probe the effects of nanoparticles. Now, the research group is exploring their in...

Open microfluidic and nanofluidic systems

...s with directly accessible surface channels can be used for micro- and nanofluidic applications but only if one carefully matches the channel geometry with the substrate wettability. This constraint is a direct consequence of the strong capillary forces that dominate in the micro- and nanoregime and can b...

Gene Vaccine Protects Mice Against Development Of Her2/neu Breast Cancer

...produces a lastingprotective response.?The vaccine used in this study is a“viral-vectored?approach, in which a naturally occurring virus isre-engineered to be propagation defective but still able to function asa delivery system for proteins from the cancer cells that are to betargeted by the animal’s immu...

Scientists identify genetic pathways essential to RNA interference

... for inactivating genes in plants or animals. They used the RNAi process itself to find new genes that par...ut also turned that gene off using RNAi. They then used RNAi to inactivate every one of the worms' 19,000 genes by feeding the worms bacteria that produce d...

A comprehensive response to HIV could prevent 10 million AIDS deaths in Africa by 2020

...produces a lastingprotective response.?The vaccine used in this study is a“viral-vectored?approach, in which a naturally occurring virus isre-engineered to be propagation defective but still able to function asa delivery system for proteins from the cancer cells that are to betargeted by the animal’s immu...

Gene Therapy For Parkinson's Disease Moves Forward In Animals

An international team of scientists has used gene therapy in two separate studies to renew brai...opeful Parkinson's patients. But the gene therapy used in monkeys represents a different way to deliver the GDNF to the brain, causing the body to produce ...

Researchers trace evolution to relatively simple genetic changes

...ith the wild fish also shows that the same gene is used whenever the low armor trait evolves. "We used sequencing studies to compare the molecular basis of this trait across the northern hemisphere," sai...

Scientists reveal molecular secrets of the malaria parasite

...nsfor malaria vaccine development, scientists have used genomics,proteomics and gene expression studies to trace how malaria parasitesevolve on a molecular level as they move between their hosts and insectvectors.That focus on the parasites' complex life cycle is helping researchersunderstand when differe...

Octopuses occasionally stroll around on two arms, UC Berkeley biologists report

...ith the wild fish also shows that the same gene is used whenever the low armor trait evolves. "We used sequencing studies to compare the molecular basis of this trait across the northern hemisphere," sai...

Studies reveal methods viruses use to sidestep immune system

...stern Medical Center sheds light on the mechanisms used by viruses to thwart a host's immune defenses and ...." Drugs called protease inhibitors currently are used to treat patients infected with HIV and have also shown promise in treating hepatitis C patients in ...

Development of portable infectious disease detector

... micro-optical fluorescence spectroscopysystem and used it as the basis for a inexpensive male fertilitydetector that can be used in the home to measure sperm motility with anaccuracy comparable to laboratory analyses."I'm thrille...

Why do insects stop 'breathing'? To avoid damage from too much oxygen, say researchers

...n it could shed light on when pesticides should be used to control insects -- crucial for the agricultural industry." ...

Scientists discover unique microbe in California's largest lake

...ago.The small subunit ribosomal RNA gene is widely used by scientists toinfer the relationships among living organisms, in part because it isgenerally assumed that it is faithfully transmitted from parent tooffspring. However, in the case of this new microbe, it appears thatDNA encoding a small portion of...

Alcohol's effects on gene expression in the central nervous system

...e eyes, skin, or hair ?is that only some genes are used or 'turned on' in each cell. This is called gene e...ed the following findings from recent studies that used genetic animal models: # Gene expression profiling in the nucleus accumbens, prefrontal cortex, and...

Deficiency of growth hormone and IGF-1 reduces cancer and kidney disease, but creates other problems

...nter and four other institutions. The researchers used a rat model to explore the effects of growth hormo...ntil they died of natural causes. The researchers used several tests to measure memory and learning. They found that growth-hormone-deficient rats had impa...

New SARS Protein Linked To Important Cell Doorway

...or direct study, Washington University researchers used the SARS genome, finished a mere half-year after t... or weaken it. "The key to studying novel viruses used to be the ability to isolate the virus and grow it in a culture," notes lead author Daved Fremont, P...

MSI releases 'moleculizer' - a new approach to simulation of intracellular biochemical networks

...ysimulating chemical reactions so that they can be used to study realcellular systems, where the huge numbers of potential species andreaction channels makes things very difficult."Computer simulations can be powerful tools in contemporary molecularbiology research, aiding scientists in analyzing data and...

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

...e AIDS treatments currently available today can be used in his case, as his particular strain of infection appears to be resistant to most known AIDS drugs. AIDS care providers see many cases of patients with a high degree of some drug resistance; however, doctors and providers can usually find a second o...

Jumping gene helps explain immune system's abilities

... recognition."Hermes behaves more like the process used by the immune system torecognize a million different proteins, called antigens, than anypreviously studied jumping gene," says Nancy Craig, Ph.D., professor ofmolecular biology and genetics in Johns Hopkins' Institute for BasicBiomedical Sciences and...

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