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Tag: "special" at biology news

Oceans more vulnerable to agricultural runoff than previously thought, study finds

...he Nature study. "A map has been developed showing special regions in the world where nitrogen is low relativ...at the addition of human-caused nutrients in these special areas causes extra blooms of phytoplankton." Yaqui Valley agriculture To assess the impact of agri...

Putting ecology back into river restoration

... Applied Ecology, which this month is publishing a special profile on river restoration. Opening the debate is a paper by 22 leading US river ecologists proposing five criteria for ecologically successful river restoration. Their aim is to arrive at an agreed set of standards which would eventually be endors...

Findings have implications for tracking disease, drugs at the molecular level

...ls, for example -- are fluorescently-labeled using special stains that enable them to be studied. "One of the most exciting aspects of this technique is that it paves the way for being able to observe behavior in living tissues at the single molecule level," said Fourkas. "The fluorescent molecules commonly...

Secret of smallpox's success may lead to bioterror cure

... has isolated and eliminated from the mutants is a special adaptation of pox viruses that appears to help the viruses hide double-stranded RNA, a form of RNA that only viruses produce and that animal immune systems have learned to recognize. "It's what we call a 'pathogen associated molecular pattern' ?a bi...

Report that delayed motherhood decreases life expectancy of mouse offspring

...e 2005 issue of Biology of Reproduction includes a special paper by a team of Spanish scientists indicating that delayed motherhood in mice results in shorter life expectancy and reduced body weight in their offspring. Negative effects of late maternal age in women, such as abnormal numbers of chromosomes i...

Of mice and men's (and women's) contraceptives

Mice lacking a special protein found only in germ-line cells results in infertility in both males and females, according to a new study from researchers at the University of Pennsylvania School of Medicine. Norman Hecht, PhD, Professor of Human Reproduction in Penn's Cente...

Gene therapy cures inherited liver disease in rats

...e is currently treated by placing the person under special UV lights. It is an unwieldy and time-consuming treatment. While Lee does not think that cure would be possible in all adults with this technique, he does think it poses a real promise for long-term alleviations of the toxic symptoms of these kinds ...

Molecular messengers perform a crucial role in the ability of injured nerve cells to heal themselves

... together with their phosphorus message, bind to a special molecule called vimentin, which protects them from dismantling or loss of the phosphorus. Vimentin links up to motor proteins that carry the message along the axon, and thanks to this linkage and protection, the messengers can safely transmit their m...

Gov't Creates Gene Database of Normal Human Tissues

...he chip. The light pattern is then measured with a special type of microscope and the results are fed into a computer for analysis. Gene expression microarrays have been used in numerous applications, including identifying novel genes associated with certain cancers, classifying tumors, and predicting patie...

A probe, not an echo

...zing radiation. *The system requires a minimum of special pre-scan procedures and appears likely, in clinical use, to be more comfortable for patients than alternatives. "The HUTT imaging system is a novel and potentially very useful approach to diagnostic ultrasound," said Dr. Phillip W. Ralls, a professo...

Scientists use manufacturing methods to reconstruct mastodon

...y 21. Meanwhile, museum visitors can peek through special viewing windows to watch preparators assemble the skeleton, which will bear 7-foot tusks. The specimen, named the Buesching mastodon for the Indiana family on whose property it was discovered in 1998, will join the museum's female mastodon skeleton, ...

Asymptomatic HIV babies could use earlier treatment

...he late group benefited from the introduction of a special type of antiretroviral drug called a protease inhibitor. They followed the children for the first three years of life, tracking at what age they developed AIDS and the rate of survival through their third birthday. As might be expected, infants born...

Second messenger NAADP shows fast, dose-related impact on satiety cycle

...ition, Ms. Yamasaki was chosen to participate in a special "controversy" session #654 of the Calcium Signaling Track on April 4 in room 29C of the Convention Center beginning at 10:30; her presentation is scheduled for 11:45 a.m. The team working on the study was comprised of Michiko Yamasaki, Grant Churchi...

Gene silencing technique offers new strategy for treating, curing disease

...ly converted into proteins, but first is copied by special enzymes into many copies of messenger RNA, which then move out of the nucleus and into the body of the cell, where they go on to create a protein. Current techniques for turning genes on or off focus on controlling the messenger RNA once it's alread...

Scientists discover global pattern of big fish diversity in open oceans

...ave already disappeared, there are still some very special places where species concentrate," says Worm. "We have the chance and the political measures to protect some of these areas. To me, it's the most important thing in the world right now ?to keep as many pieces of the puzzle as we can before we destroy...

Research on antibiotics receives historical recognition

...toric Chemical Landmark at Rutgers University in a special ceremony in New Brunswick, New Jersey, on May 24. The American Chemical Society, the world's largest scientific society, sponsors the landmarks program. Beginning in the 1930s, Selman Waksman, Ph.D., and his students began the search for antibiotics...

Fungus-farming termites descend from an African rain forest Eve

..., which can grow very large, the fungus grows on a special structure called the comb, which is maintained by the termites by the continual addition of new plant material. Researchers Duur Aanen (University of Copenhagen) and Paul Eggleton (The Natural History Museum London), having sampled 58 colonies of fu...

Stem cell therapy successfully treats heart attack in animals

...stive heart failure." The researchers are using a special kind of stem cell in an early stage of development, called adult mesenchymal stem cells, to avoid potential problems with immunosuppression, in which every human's immune system might attack stem cells from sources other than itself. Bone marrow adul...

Combination therapy leads to partial recovery from spinal cord injury in rats

...] In the study, the researchers took cells called special cells called glial-restricted precursors from the spinal cords of embryonic rats. These precursor cells develop from stem cells and are specialized so that they can form only two kinds of cells: astrocytes, which help support neurons and influence th...

Mosaic mouse technique offers a powerful new tool to study diseases and genetics

...ch chromosome. Before cell division is complete, a special enzyme causes the exchange, or recombination, of the two engineered chromosomes. If one of those chromosomes contains a bad copy (mutation) of a gene, the recombination event could cause an offspring to inherit two bad copies of the gene, which would...

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