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Tag: "added" at biology news

Wild vs. lab rodent comparison supports hygiene hypothesis

...ferent types of immune responses. The researchers added that their experimental model, which compares specific immune system responses of wild rodents to laboratory rodents, could open up a new approach to studying human disease and allergies that complements traditional scientific studies. "Laboratory r...

New strategy rapidly identifies cancer targets

...eally finding much," he said. Instead, the team added tools from the burgeoning field of proteomics, the study of proteins. "We decided this more functional assay would get us to the disease-causing genes more rapidly," said Druker, who has been studying a group of cell-signaling proteins called tyrosin...

Encoded metallic nanowires reveal bioweapons

...s that have been tagged with a fluorescent dye are added to the sample. These also dock onto the pathogen s...er and more accurately. If nickel stripes are also added to the ends of the wires, they can then be magnetically separated out during the required washing st...

Molecular DNA switch found to be the same for all life

...ess. Through the millions of years, evolution has added bells and whistles around this highly conserved central engine." ...

T cells activated to fight HIV basis for dendritic cell therapeutic vaccine

...to certain immune cells, and interferon gamma were added to dendritic cells. In the study, white blood cells called monocytes were obtained from both HIV patients and individuals not infected with the virus. In the laboratory, the researchers coaxed them to differentiate into mature dendritic cells, an...

Scientists discover why cornea is transparent and free of blood vessels, allowing vision

...essel growth To further prove their theory, they added a VEGFR-3 substitute to corneas stripped of their epithelial layers and found that vessel growth continued to be suppressed, replacing the normal anti-angiogenic role of the epithelium. Finally they exposed intact corneas to an agent that blocked VE...

'Sticky' mice lead to discovery of new cause of neurodegenerative disease

...cell's protein synthesis machinery, where they are added to the growing stringlike protein molecules being manufactured there. Each tRNA is designed to carry only one of the 20 amino acids used to build proteins, and accurate loading is critical for the resulting protein to have the correct structure. A...

Tropical forest CO2 emissions tied to nutrient increases

...h occur naturally in the rain forest soils -- were added to forest plots in Costa Rica, they caused soil microbes to increase their CO2 emissions to the atmosphere by about 20 percent annually, said Cory Cleveland of CU's Institute of Arctic and Alpine Research. The study is important because human activ...

Researchers link two more genes to sudden infant death syndrome

Recent discoveries at Mayo Clinic added two more cardiac genes to the list of potential li... to expose the causes of SIDS. So far, we have now added six genes to the SIDS most-wanted list." In 2001, a team of investigators led by Dr. Ackerman ident...

A new tool against brain disease

...igger the immune system to attack the body. Walker added that the researchers' findings will also likely have application in understanding other chronic viral diseases. The findings by Walker and his colleagues were published in an advance online publication on August 20, 2006, by the journal Nature...

How HIV 'exhausts' killer T cells

...igger the immune system to attack the body. Walker added that the researchers' findings will also likely have application in understanding other chronic viral diseases. The findings by Walker and his colleagues were published in an advance online publication on August 20, 2006, by the journal Nature...

Fish virus in Northeast spreading to other fish species

...e washed up more fish from deeper waters. Groocock added that while more species of fish are dying, absolute numbers of fish mortalities do not appear to be changing. "There is no cure for VHSV in fish in an ecosystem as large as the Great Lakes Basin. Given this, it is likely that management practices de...

Neurons grown from embryonic stem cells restore function in paralyzed rats

...o motor neurons. Just before transplantation, they added three nerve growth factors to the culture medium. Most of the cells were also cultured with a substance called dibutyrl cAMP (dbcAMP) that helps to overcome axon-inhibiting signals from myelin, the substance that insulates nerve fibers in the spinal ...

Montreal researchers identify defects of immune cells

...tening patients' general health and well-being. Of added concern, treatment of candidiasis in these patients is often complicated by strains of Candida albicans resistant to conventional antifungal therapies. The research project was carried out jointly by Dr. Louis de Repentigny, Director of the Medical M...

Scientists aim to thwart use of flu as bioweapon

...rtin Zand, M.D., Ph.D., co-director of the center, added that "We don't know whether flu will be weaponized; it's crucial to ask the question and to be prepared." The focus of Wu's center, funded by the National Institutes of Health, is the mathematical modeling of infectious diseases. When the flu virus ...

Sandia work launched on space shuttle shows live cells influence growth of nanostructures

... tiny apartment house - form when single cells are added to a visually clear, aqueous solution of silica an...ndscaping. They can organize metallic nanocrystals added at the cell surface. These may enhance the sensitivity of Raman spectroscopy for monitoring the onse...

Selenium-protein deficiency raises prostate cancer risk

...ncing levels of protective selenoproteins. Diamond added that much work remains to be done to discover exactly how selenoproteins play their protective role, and in whom. At least 25 different selenoproteins have been found in the human body. But what role each plays is not known, nor is it known if certa...

New genetic test for breast cancer

...ich patients will truly benefit if chemotherapy is added to the treatment," said Joseph Sparano, MD, who directs the Breast Evaluation Center at the Montefiore-Einstein Cancer Center. "With better individualized treatment, we can spare women the side effects of chemotherapy where it is unnecessary." Dr. ...

Genetic tug of war determines sexual differentiation

... the evolution of all vertebrates, Capel said. She added that a different genetic or environmental stimulus may tip the balance between these signals in other species. In nonmammalian vertebrates, other cues provide the primary stimulus for embryonic gonad differentiation, Capel said. For example, environ...

U of M researchers find immune-activating cells in intestines

...to try to identify a similar group in people. He added this population of cells may be important in many responses in the gastrointestinal system, which may be helpful in studying diseases and conditions such as ulcerative colitis, and Crohn's disease. The research was done in collaboration with scienti...

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