little 2 7

Tag: "little" at biology news

Chromosomal microarray analysis proves accurate

...dentified the chromosomal problem (too much or too little genetic material in a particular spot) in 8.5 percent of the total group of patients studied. This high resolution genome analysis promise to transform the practice of clinical genetics," said Beaudet. More important, the technique found abnormali...

HIV dementia alarmingly high in Africa

...the world," Sacktor says. Sacktor says there’s little accurate data about HIV dementia patients in other parts of the world --- current estimates of the number of HIV-positive patients who have dementia range from 9 percent to 54 percent. ...

Investment level in HIV prevention programs related to HIV incidence in the United States

...stment (adjusted for inflation) flattened out with little annual change, so too did the number of new infections per year. This suggested to the researchers that level investment yields level incidence. "Our analysis helps explain why the number of new HIV infections has remained at 40,000 per year for o...

Light wine intake is associated with longer life expectancy in men

Drinking a little alcohol every day, especially wine, may be associated with an increase in life expectancy. That’s the conclusion of Dutch researchers who reported the findings of their study today at the American Heart Association’s 47th Annual Conference on Cardio...

A potential biological cause for sudden infant death syndrome

...otective factors like pacifier use, there has been little understanding of SIDS's biologic basis. "Researchers led by neuropathologist Hannah Kinney, MD, and neuroscientist David Paterson, PhD, at Children's Hospital Boston and Harvard Medical School examined brain autopsy specimens from 31 infants who ...

ASU researchers test antibacterial effects of healing clays

...the clay and say, 'well that's dirt.' Now I know a little something about clay structure; Lynda knows a little bit about microbiology. Alone, we each would have had to study for years; together we are partnering...

How fish mend a broken heart

... housed inside an epicardium, a tissue about which little is known. "Scientists haven't paid much attention to the epicardium in adults," Poss said. "These findings in fish should encourage more exploration of what adult epicardium can do. "There is the potential that these cells could be utilized for t...

Key to zebrafish heart regeneration uncovered

...tified within the mammalian heart, yet it displays little or no regeneration when damaged," Poss said. "By contrast, zebrafish mount a vigorous regenerative response after cardiac injury. Future studies in zebrafish could help us discover why this regenerative ability is lacking in mammals and potential way...

Growth factor stimulates rapid extension of key motor neurons in brain

...l cortex, it has been difficult to study CSMN, and little has been known about cellular and molecular factors that control their growth and development. In order to study growth factor controls over these cells, Macklis and Hande Ozdinler, PhD, a postdoctoral fellow in his laboratory, developed a new way o...

Fake pesticides threaten food safety

...ies of patented products to low-quality fakes with little or no resemblance to the original. And it is a problem that is getting worse every year, according to the European Crop Protection Association 'Clearly there are risks when products that have not been properly studied or evaluated are being brought o...

UCSF study will test new vaginal microbicide for herpes and HIV

...e realize that we must approach new microbicides a little more carefully," Moscicki said. According to the U.S. Centers for Disease Control and Prevention, women account for more than one quarter of all new HIV/AIDS diagnoses. Women of color are especially affected by HIV infection and AIDS. In 2002, the...

Stem cells engage in dialogue with the cells that regulate their futures

...cell division needs to be tightly controlled." Too little division results in poor maintenance of tissues, while too much can result in tumors or other malignancies. Her lab used the germline stem cell niche, found in the ovaries of fruit flies, as a model system. The production of fruit fly eggs depends...

Power emerges from consensus in monkey social networks

...t bared-teeth display. On the other hand, there is little consensus if signals come from just a few individuals. "Consensus about power is an important organizing principle in societies in which conflicts are complicated, often involving many group members at once," explains Krakauer. "In such cases, only ...

Math model predicts cancer behavior

... a new result, you correct the model, and you're a little bit closer to reality," Quaranta said. "This is a paradigm that is new to experimental biology." "What is happening in biology is similar to trends seen in recent decades in the physical sciences," Cummings said. "Computational models like this, in...

Protein structure initiative launches new resources for the scientific community

...rganisms. The majority of these are novel, sharing little structural resemblance to others in the PDB. Technology Development As the four large-scale PSI centers concentrate on churning out structures, the six specialized centers will continue to develop methods and tools that lead to more efficient a...

Weighty viruses

...re and characteristics of these genetically varied little organisms, it would be highly useful to be able to determine their masses and how much these vary within a given population. Researchers in Taiwan have now used very gentle ionization techniques and a miniaturized ion trap of their own devising to ac...

Vanishing beetle horns have surprise function

...y categorized according to their adult shapes with little or no heed given to the quirks of the beetles' development. __IMAGE_2 Despite the growing presence of developmental biology in evolutionary studies, "Even today, evolutionary theory is very much a theory of adults," Moczek said. "But evolution ...

How the brain weaves a memory

...er into a coherent whole, and researchers have had little understanding of how this binding takes place as the memories are processed by the brain's memory center, the hippocampus. A central question has been whether the hippocampus receives an "episodic packet," or a collection of perceptual strands that i...

Edible coatings will be the packaging of the future

...an antioxidant agent that penetrates the foodstuff little by little and thus offers an ongoing protection. The idea was to extend the conservation time for a chicken br...

The power of one: A simpler, cheaper method for cell fusion

... electrofusion is that researchers have relatively little control over how many cells they fuse at once; the technique works by aligning an uncertain number of cells along an electrical field before zapping them with pulses of electricity. Lu's technology is more precise. "In my device, the narrow sectio...

1 2 3 4 5 6 7 8 9 10