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Tag: "distinct" at biology news

Evolutionary biology research techniques predict cancer

...base used in the study represents more than 32,000 distinct genotypes of different cells within the tumors. Using computational techniques to analyze the data, the researchers calculated measures of diversity inside the tumors. Essentially, they counted cell varieties and measured the genetic difference, or ...

A link is found between morphine addiction and the tendency to explore

...d that has two very different compartments, with a distinct colour, feel and smell. The animal is placed in a compartment after being injected with the drug and is left to experiment the effects of the drug and associates them with the specific characteristics of the the compartment of the cage. On a differen...

Researchers create pigs that produce heart-healthy omega-3 fatty acids

...base used in the study represents more than 32,000 distinct genotypes of different cells within the tumors. Using computational techniques to analyze the data, the researchers calculated measures of diversity inside the tumors. Essentially, they counted cell varieties and measured the genetic difference, or ...

Marine mammals are on the frontline of failing ocean health

...and timing of chemical use around the globe create distinct chemical signals that are reflected in the tissues...d sewage outfalls. The signal of pollutants is so distinct that it is echoed in the tissues of killer whales. Sub-populations once thought to feed mainly on s...

New RNAi tools enable systematic studies of gene function

...s required for such genome-scale studies. "It is a distinct challenge to achieve consistent and cost-effective RNAi methods and we placed a strong emphasis on this part of the process," said David Sabatini, member of Whitehead Institute for Biomedical Research, assistant professor at Massachusetts Institute o...

Driver of anthrax toxicity could lead to late-stage therapy

...up anthrax toxin through its interactions with two distinct cell- surface proteins earlier shown to bind the "protective antigen carrier" of anthrax toxin, allowing its delivery into cells. The new findings "reveal a previously unsuspected biological role" for LRP6, a gene earlier found to play important rol...

New DNA 'fingerprinting' technique separates hemp from marijuana

...na, the DNA fingerprints of all the cultivars were distinct and nonoverlapping. Weiblen and Shannon L. Datwyler, a postdoctoral associate who is now on the faculty of California State University, Sacramento, found that the AFLP (amplified fragment length polymorphism) technique generated hundreds of genetic m...

Behavioral studies show UV contributes to marsupial color vision

..., indicating that the presence of three spectrally distinct cone types, sensitive to short (SWS), medium (MWS)...ers therefore investigated the contribution of the distinct cone types to color vision in the fat-tailed dunnart (Sminthopsis crassicaudata), using additive col...

Study outlines genetic differences between potential pandemic influenza strains

...elated but also that they belong to two different, distinct genetic subgroups. Researchers from the Centers f... study. "Back in 2003 we only had one genetically distinct population of H5N1 with the potential to cause a human pandemic, now we have two." Garten and her c...

Earth Rx: A microbial biotechnology prescription for global environmental health

...). Their solution: a synergistic marriage of two distinct disciplines, microbial ecology and environmental biotechnology. "Together, they offer much promise for helping society deal with some of its greatest challenges in environmental quality, sustainability, security, and human health," Rittmann stated in...

Watching the brain switch off 'self'

...essing or self-reflective introspection were quite distinct and segregated. Sensory processing activated the sensory cortex and related structures, while introspection activated the prefrontal cortex, they found. Importantly, the researchers found that activity in the self-related prefrontal cortex was silen...

Oh, rats! Designer animals reveal possible heart disease genes

...d 22 unique designer rat strains, each bearing one distinct healthy chromosome substitution. Some of these new designer rats were disease-free, implying that their replaced chromosomes carried genes for high blood pressure and related conditions. In the second part of the study, TIGR molecular biologist Norm...

Forsyth scientists gain greater understanding of how embryos differentiate left from right

... been identified in left-right patterning in three distinct species. Such a discovery may have far-reaching implications for the understanding of craniofacial development, right-left hand preference, right/left brain dominance and a variety of birth defects in humans. A team of Forsyth Institute scientists...

Neuroscientists discover new cell type that may help brain maintain memories of smells

...Health. Strowbridge and Pressler highlighted two distinct set of experiments they hope to pursue in the near future. The first relates to the possible connection between the sense of smell and Alzheimer's disease. The Case investigators found that the same biological machinery that helps the olfactory bra...

For some young fish, early gene expression is a clear harbinger of fated lifestyle

...n profiles associated with lifestyle fates were so distinct that by measuring the expression levels of relevant genes, it was possible to predict the future lifestyle of fish at the juvenile stage. ...

New analysis shows three human migrations out of Africa

... of Washington University in St Louis, shows three distinct major waves of human migration out of Africa inste...sian populations," he said. "So the idea of pure, distinct races in humans does not exist. We humans don't have a tree relationship, rather a trellis. We 're...

Oops! Researchers publish new findings on the brain's response to costly mistakes

...ior studies, Gehring and his colleagues observed a distinct brain electrical response to errors, dubbing it ERN for "error-related negativity." Using ERP, Gehring and his colleagues localized the brain's response to errors to the vicinity of the rACC, a larger region of the brain known as the medial frontal ...

AIDS drug from sunflowers

...his knowledge would make mass production of DCQA a distinct possibility. Even now chemists can 'copy' the substance, albeit only with great difficulty. 'The tricky bit is transferring the caffeoyl groups to the quinic acid,' Ralf Theisen says. 'The plants probably only have one enzyme, which acts as a catalys...

Evolution follows few of the possible paths to antibiotic resistance

...k, one intrinsic property of DNA is that very many distinct mutational paths link any two variants of a gene," says lead author Daniel M. Weinreich, a research associate in Harvard's Department of Organismic and Evolutionary Biology. "Although this fact has been recognized for at least 35 years, its implicati...

Genome changes tracked during multiple myeloma initiation, progression and treatment

... that are characterized by varied dysregulation of distinct cancer-relevant genes and can be correlated with different clinical outcomes. Importantly, several candidate genes identified in this study possess broad clinical and biological relevance, as they are also associated with histologically unrelated mal...

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