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Tag: "along" at biology news

Fishy cooperation

...t is commonly thought that animals can be arranged along a ladder of intelligence—a sort of modern-day Scala Naturae—with humans inevitably at the top, followed by our close relatives, the primates, all the way down to fish and other slimy creatures. Over the past decade, this ladder has been challenged by...

A buffet for early human relatives

...laser was used to remove samples at various points along the length of the tooth, which is marked by tiny ridges called perikymata. They run parallel to the tooth's crown and represent tooth growth, similar to tree rings. Perikymata are produced under the gums during the animal's juvenile years, when teeth...

The subtleties of tropical forest demise

...search Institute in Panama, who co-edited the book along with Carlos Peres, a Brazilian biologist with the University of East Anglia, U.K. "It's astonishing how insidious many of the threats are," said Peres. "We rely on satellite images or aerial photos to tell us how fast tropical forests are disappeari...

To slow AIDS in Russia, treat HIV-positive addicts, Stanford study says

...t HIV transmission in Russia, Owens and Brandeau, along with doctoral student Elisa Long, created a computer model of the virus' spread through the adult population in St. Petersburg, Russia. They accounted for infection rates among drug users and non-drug users and the reduced viral transmissibility ...

Rearing an army to save wheat

...o. "There are larger areas of sawfly damage all along the Golden Triangle, the northern tier of Montana counties as well as the area around Lewistown, Circle and Jordan," Weaver said. Currently, MSU is specifically partnering with MSU Extension county agents to redistribute and monitor populations of pa...

Reef warns of sea level rise

...has a number of both living and fossil coral reefs along it, the results of the Leeuwin current bringing coral larvae down from Indonesia and northern Australia over many tens of thousands of years. Together these reefs indicate what occurred during the last big sea level rise. "At the time when this ree...

Study shows antibiotic-resistant bacteria responsible for increase in muscle infections

...pical countries becoming more frequent occurrences along with the emergence of community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA), according to a study published in the Oct. 15 issue of Clinical Infectious Diseases, now available online. Staphylococcus aureus, or staph, is a common b...

Researchers create mouse lacking key inflammation gene

... a new approach to treating inflammatory disorders along with other immunological conditions. Researchers are offering this in vivo model for sale to spearhead discovery of drugs against inflammatory disorders such as arthritis and Crohn's disease. In the study, Boston University researchers created a m...

One signal elicits thousands of answers

...phorylation of a multitude of enzymes and proteins along a signal transduction pathway. In the following step all proteins were isolated from the cells, divided into different fractions and analysed via mass spectrometry. This technology allows the precise identification of structure and composition of unk...

Sea urchin genome suprisingly similar to man and may hold key to cures

...edicine-Human Genome Sequencing Center in Houston, along with Dr. Richard Gibbs, director of the Baylor center, and Drs. Eric Davidson and Andrew Cameron at the California Institute of Technology. Of particular interest to Calestani is the way the sea urchin’s immune system works. The human immune syste...

Neural networking nanotubes

... is applied, a relatively large current is carried along the surface but only a very small current, in the region of billionths of an amp, is passed across the film to the nerve cells. The net effect is a kind of reverse amplification of the applied voltage that stimulates the nerve cells without damaging ...

Scientists design simple dipstick test for cocaine, other drugs

...ticles. The red-colored nanoparticles then migrate along the membrane, where they are captured by the streptavidin and form a red line. The intensity of the line is an indicator of how much of the targeted molecule was in the sample solution. So far, the researchers have successfully demonstrated their d...

Study illuminates how the plague bacteria causes disease

...econd YpkA domain, the "Rho-GTPase binding domain" along with the host protein, "Rac1," with which it interacts. "The Yersinia structure was doing things to Rac1 that the host proteins normally do," Stebbins said, suggesting that the domain acted as a mimic. Further examination confirmed the domain to be...

From a lowly yeast, researchers divine a clue to human disease

...into related threads of RNA. The polymerase reads along DNA strands, building RNA as it goes. Multiple genes strung along a single length of DNA are separated by gaps to mark boundaries. As the polymerase reaches the end ...

Study IDs protein that inhibits HIV from growing in cell cultures

...on have been studied for nearly a decade by Xiang, along with another study author Jack Stapleton, M.D., staff physician and researcher at the VA Iowa City Health Care System and professor of internal medicine at the UI Roy J. and Lucille A. Carver College of Medicine. "Identifying a specific protein m...

Key to lung cancer chemo resistance revealed

...g tissues from the same patients. NRF2 activity along with its cleansing proteins and enzymes were higher in tumor samples than normal cells, according to the researchers. Their cell culture tests also show that cancer cells with KEAP1 mutations are more resistant to chemotherapy drugs than normal lung...

Taking 'chips' to the next level of gene hunting

... of letters, the TIP-chip highlights exactly where along the DNA sequence these elements have landed. By chopping up the DNA, amplifying the DNA next to the transposable elements and then applying these amplified copies to the TIP chip, the researchers were able to map more than 94 percent of the transposa...

Regulating the nuclear architecture of the cell

...ow they act on the chromosomal material. Steps along the path Several genes previously identified in Drosophila as having a role in the suppression of gene expression, known as suppressors of variegation, were named Su(vars). The gene family known as Su(var)3-9 codes for proteins that chemically ...

A new target for painkillers

... inches in length and lives from Georgia southward along Central America to Brazil's central coast. -- Vc1.1 is from the species Conus victoriae, which measures 1.4 to 2.8 inches long and lives off portions of Australia. RgIA and Vc1.1 fit like keys into lock-like alpha9alpha10 nicotinic acetylcholin...

Nanoparticle assembly enters the fast lane

... with surrounding nanoparticles. This flexibility, along with the existence of multiple forms of single-stranded DNA, can greatly slow the assembly process. In the Brookhaven study, researchers introduced partially rigid, double-stranded DNA, which forces interacting linker segments of DNA to extend away f...

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