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Tag: "definition" at biology news

RNA project to create language for scientists worldwide

... appearing in databases, to agree upon and write a definition for each motif. The consortium's work will be accessible on the Web to the various RNA research communities using servers hosted at BGSU. Some researchers focus on the sequences of RNA molecules, while others study their 3-dimensional structures. A ...

Researchers make surprise discovery that some neurons can transmit three signals at once

...le of this month's Nature Neuroscience, is that by definition these three neurotransmitters are seemingly at odds with each other. One, glutamate, is a textbook excitatory neurotransmitter; while the other two, GABA and glycine, are quintessential inhibitory neurotransmitters. Information is transmitted betwee...

Male Combat Veterans Rank High In Heart Disease Risk

... into quartiles. The researchers used the standard definition of obesity, a body mass index of 30 or higher, she said. "Consistent with younger veterans of more recent wars, older men with distant combat exposure had higher odds of heavy smoking, heavy drinking and obesity, but lower odds of physical inactivit...

New Lab Research May Help Those Deafened By Immune System Attack

... drugs' harsh side effects. It may also expand the definition of the condition, known as autoimmune sensorineura...oss has historically been excluded from the formal definition of AISNHL, Carey suggests the definition may need re-examining in light of this strong evidence for ...

Experimental shingles vaccine proves effective in nationwide study

...xperience pain lasting for 3 months or longer (the definition of PHN used in the study). As people age, however, shingles-associated nerve pain increases in frequency and severity. This complication may occur in nearly one-third of persons with shingles who are 60 years of age or older. Patients with PHN often...

Color perception is not in the eye of the beholder: It's in the brain

...we all share the same world, we arrive at the same definition of colors." Williams' team is now looking to identify the genetic basis for this large variation between retinas. Early tests on the original volunteers showed no simple connection among certain genes and the number and diversity of color cones, but...

Mammalian Transcriptome Mapped

...eins and therefore does not fit into the classical definition of a gene.) While Wahlestedt and his consortium colleagues found 20,714 protein-encoding RNA transcripts--which was what the scientists expected, since there are about 22,000 genes in the human genome--they found an even larger number of noncoding RN...

Researchers offer proof-of-concept for Altered Nuclear Transfer

...s. Because the embryos cannot implant, they are by definition not "potential" human lives. Some suggest that this would quell the protests of critics who claim that embryonic stem cell research necessitates the destruction of human life. Scientists and ethicists have debated the merits of this approach, but so ...

HIV drug resistance increasing in UK and among highest in the world

...finitions of resistance. Using a more conservative definition of resistance (high level resistance to at least one drug) gives an overall estimate of 9% for the UK for the years 1996-2003, with the rate being 12% in 2002-3. The authors say: 'The United Kingdom has among the highest reported rates of primary re...

Sahara's edge studied from ground, air and space to improve water management

...ring a baseline dataset to support Aquifer product definition for two test areas of southern Tunisia, the Ben Gardane and Gabès regions. Each about 10 000 hectares in size, these test areas are representative for agricultural crops, natural pastures and irrigation practices. Both sites are located above the va...

New research examines genetics of successful aging

...ot only is this a goal that many of us share, this definition of 'successful aging' can be determined objectively and consistently across subjects--an important requirement of scientific studies." While previous research found that genes make important contributions to exceptional longevity, the goal of this ...

First demonstration of 'teaching' in non-human animals

...ure [12 January 2006]. According to the accepted definition of teaching in animal behaviour, an individual is a teacher if it modifies its behaviour in the presence of a naïve observer, at some initial cost to itself, in order to set an example so that the other individual can learn more quickly. Professor ...

Study finds 60 new genes controlled by DNA snippet

...earchers used a high-speed screening to expand the definition of the functional mammalian CarGome, the complete set of CArG boxes that regulate genes. In collaboration with Christian Stoeckert, Ph.D., associate professor of Genetics at the University of Pennsylvania, Miano's team designed a set of criteria th...

New research examines genetics of successful aging

...While this is a goal that many of us share, such a definition of 'successful aging' can be determined objectively and consistently across subjects--an important requirement of scientific studies." While previous research has revealed that genes make important contributions to exceptional longevity, the goal ...

Patients to benefit from novel technology revolutionizing high-speed molecular imaging

...to its very high sensitivity (10 times higher) and definition (up to 2 times the resolution) and novel scanning design--together with usage of high-energy discrimination of the solid state detectors--this new technology can open the way to personalized diagnostics taking into account patient-specific physical i...

World-wide warning of highly drug-resistant tuberculosis

...lti-drug resistant and of those, 24% met the exact definition of being extensively drug resistant tuberculosis (also referred to as XDR tuberculosis). Such tuberculosis is almost untreatable. All patients in this outbreak who were tested were HIV positive and 52 of the 53 died after an average of 25 days. S...

New study: Preterm birth causes one-third of all infant deaths

...who were born at less than 32 weeks gestation, the definition of infants who are "very preterm." Birth defects are the leading cause of infant death, followed by prematurity, according to the official reporting systems. But, using this new classification, premature birth would be the most frequent cause of inf...

Genomics throws species definition in question for microbes

...n light of this new knowledge, what exactly is the definition of a microbial species, and how should microbiolog...he post-genomic era, including a discussion on the definition of the term "species." It ends with a set of specific recommendations including, but not limited to...

Researchers find link between food odors and lifespan in fruit flies

...hies noted. "If you are studying longevity, by definition the study is going to take longer than the lifespa...hies noted. "If you are studying longevity, by definition the study is going to take longer than the lifespan of the researcher," he said. Van Voorhies sai...

Improved predictions of warming-induced extinctions sought

...mendations cover a wide range, from clarifying the definition of biodiversity to improving existing models and developing better ones. They include, for example, the suggestion that current models need to be more rigorously tested, that explanations of extinction other than climate change need to be more thorou...

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