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Tag: "exploring" at biology news

Nanoparticles, nanoshells, nanotubes: How tiny specks may provide powerful tools against cancer

...lionth of an inch. Today, cancer researchers are exploring the potential of such nanostructures to exquisitely target cancer cells without harming surrounding tissue, and to image the formation of tumors long before they have a chance to become life-threatening. While diagnostics and approved therapies are...

New study shows patients more willing to consider self-injectable HIV therapy than many physicians anticipate

...e look forward to presenting the final results and exploring possible interventions at major congresses next year." ...

Fish evolve a longer lifespan by evolving a longer reproductive period, researchers find

... the end of their capacity to reproduce? "We were exploring whether or not fish have the equivalent of mammalian menopause," Reznick said. "We found that 60 percent of the fish had a significant post-reproductive lifespan, indicating that, yes, fish do have menopause. Indeed, their patterns of growing old are...

Molecular cabal contributes to stroke damage

...rs on the surface of brain cells. Now, researchers exploring the detailed mechanism of this excitotoxicity and acidotoxicity have discovered how an insidious chain of molecular events contributes to its damage. In an article in the November 23, 2005, issue of Neuron, Jun Gao and colleagues say that their findi...

DNA size a crucial factor in genetic mutations, study finds

...a live cell,'' he says. Kool and the gang are now exploring ''the funny finding that the bugs prefer DNA that's larger than natural DNA'' by making larger nucleotides. ''Size and shape are related issues, so we're interested now in keeping the size constant and changing the shape,'' Kool adds. ...

Human brain is still evolving

... to humans led Lahn and his colleagues to consider exploring whether these two genes are still evolving under selection in modern human populations. "In the earlier studies, we looked at differences that had already been set in the human genome," he said. "The next logical question was to ask whether the same ...

Sensor web simulation investigates technique to improve prediction of pollution across the globe

...and towns around the globe, NASA technologists are exploring an innovative technology called the "sensor web." This interconnected "web of sensors" coordinates observations by spacecraft, airborne instruments and ground-based data-collecting stations. Instead of operating independently, these sensors collect d...

Monkeys understand numbers across senses

...imental approach also will lead to further studies exploring whether human infants, before they have a verbal capacity, understand similar abstract numerical concepts, they said. The researchers, led by Elizabeth Brannon of Duke University and Asif Ghazanfar of Princeton University, published their findings i...

One bacteria stops another on contact

...dormant state." Aoki explained, "We are currently exploring how contact between bacteria can inhibit cell growth �� and determining what this contact-dependent inhibition of growth (CDI) system is used for. These genes are present in E. coli, including uropathogenic E. coli that cause urinary tract infections...

Team of international scientists departs today to discover the unknown in China's Himalayan region

...ing scientists searching for signs of new species, exploring the Himalayan landscapes and interviewing local officials, scientists and residents about their experiences and sightings of the region's unusual creatures. Renowned for compelling, real-world storytelling, Discovery will share these unique stories w...

'Sinkers' provide missing piece in deep-sea puzzle

...rvacean houses (commonly known as "sinkers") while exploring the waters of Monterey Bay using MBARI's remotely operated vehicles (ROVs). After seeing how common sinkers were, Robison wondered if they might be delivering significant amounts of food (in the form of organic carbon) to the deep sea. As he explains...

Frog peptides block HIV in lab study

... states of mind. Tononi, one of the few scientists exploring the frontiers of consciousness, has theorized that conscious thought depends on the brain's ability to integrate information. "Sleep is the most familiar alteration of consciousness," he says. "It happens every night to all of us. Every night, when ...

Deep sleep short-circuits brain's grid of connectivity

... states of mind. Tononi, one of the few scientists exploring the frontiers of consciousness, has theorized that conscious thought depends on the brain's ability to integrate information. "Sleep is the most familiar alteration of consciousness," he says. "It happens every night to all of us. Every night, when ...

Motor transport in bio-nano systems

...s can guide the design of new transport systems by exploring different system architectures in a systematic way before they are actually constructed in the lab. The enhanced diffusion of motors at regular patterns of filaments provides an instructive example: When integrated into existing microarrays for DNA a...

Researchers discover mechanism for multiplying adult stem cells

...ount of public attention, many scientists are also exploring the potential of adult stem cells for possible the...," Jaenisch adds. Researchers in his lab are also exploring whether activating Oct4 in somatic cells, such as skin cells, would make it easier for these cells t...

Researchers grow stem cells from human skin

... any cell or tissue in the body. But they are also exploring the potential of stem cells from adults. In addition to skin, the cells have been identified in bone marrow, the brain and blood from the umbilical cord. "Compared to bone marrow, a skin biopsy is easy to take, so it offers advantages for clinical u...

IMF Launches World’s First DNA Database for Myeloma Patients

... Using this study as a springboard, Langerhans is exploring the role of genital divergence in the process of speciation. Divergence in a copulatory organ might be especially important in speciation -- owing to its obvious link to reproduction, which largely defines species boundaries. Evolutionary changes in ...

Certain fish have a special mating preference

... Using this study as a springboard, Langerhans is exploring the role of genital divergence in the process of speciation. Divergence in a copulatory organ might be especially important in speciation -- owing to its obvious link to reproduction, which largely defines species boundaries. Evolutionary changes in ...

Random gene expression may drive HIV into hiding

...d dissect them at this level, it gives you ways of exploring where your most vulnerable places might be." Commenting on the work in a preview article published in the same issue of Cell, William J. Blake and James J. Collins of the Center for Biodynamics of Boston University, wrote: "The work of Weinberger et...

Ancient DNA helps clarify the origins of two extinct New World horse species

...ue, the study's new model could provide a tool for exploring how environmental adaptations give rise to morphological variation. ### Citation: Weinstock J, Willerslev E, Sher A, Tong W, Ho SYW, et al. (2005) Evolution, systematics, and phylogeography of Pleistocene horses in the new world: A molecular perspe...

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