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Tag: "others" at biology news

Scientists narrow the time limits for the human and chimpanzee split

... World monkeys -- including baboons, macaques, and others -- from the branch of the phylogenetic tree that led to humans and apes, which fossil studies have shown is at least 24 million years ago. Using this calibration time, the team estimated that the human-chimp divergence occurred at least 5 million ye...

The brain is broadly wired for reproduction

...d. "I think that through studies like these we and others are going to make substantial progress in understanding the neural circuits that underlie behavior." ...

Worms know bad food when they smell it

...tes. But while some bacteria make ideal worm food, others are toxic. "The worm swallows them and then they establish an infection inside the worm's gut and they proliferate there. It's exactly like food poisoning," Bargmann explained. If the worm has ingested enough of the bacteria, it can die quickly, bu...

NIH launches comprehensive effort to explore cancer genomics

...oving current genomic analysis technologies, while others will emphasize new approaches, such as epigenomics. Epigenomics looks at how various small molecules, such as methyl groups, when added or removed from DNA, can have profound effects on gene function. Each component of the TCGA Pilot Project will hav...

Scientists show how thinking can harm brain cells

...iazoxide is not the only drug that would work, and others might be better, the researchers said. Memantine, a drug that blocks glutamate receptors, is used in the treatment of Alzheimer's. Chemical preconditioning could represent an alternate or complementary strategy. "Preconditioning to protect the synap...

GROWing the next generation of water recycling plants

...l. Should one species die off, there will still be others there to continue the job until the dead plants can be replaced. The beauty of the system is that it is not 'high-tech' in the traditional sense. "It does not require sophisticated maintenance, just tending, like any garden," says Butler. The next...

Scientists crack code for motor neuron wiring

...broad aspects of motor neuron differentiation, and others to finer aspects of diversification. Ultimately, what crystallized from these experiments was a code -- an organized relationship between Hox proteins, their chromosomal organization, and the differentiation and connectivity of motor neuron pools," h...

Scientists fetch useful information from dog genome publications

...iven locus, some dogs have the SINE sequence while others do not," explains Kirkness. "This may have a profound impact on gene expression differences and disease determination in dogs." SINE-associated diseases have already been described in Doberman Pinchers and Labrador Retrievers. For example, centron...

Dog genome sequenced

...iven locus, some dogs have the SINE sequence while others do not," explains Kirkness. "This may have a profound impact on gene expression differences and disease determination in dogs." SINE-associated diseases have already been described in Doberman Pinchers and Labrador Retrievers. For example, centron...

Forgotten by evolution?

...s a synonym for heritable modifications of the DNA others than alterations of the base sequence like DNA-methylation and changes of the chromatin). In the differentiation toward skeleton musculature, the scientists indeed saw characteristic features of the skeletal muscle cells. It never came, however, to ...

Argonne researchers confirm lead in Beethoven's illness

...to help determine the cause of his illness so that others would not have to suffer as he did. "Beethoven suffered from bad digestion, chronic abdominal pain, irritability and depression. Since he died in 1827 at age 57, there has been much speculation but no proof of the cause of his illnesses and death." ...

Carnegie Mellon U. transforms DNA microarrays with standard Internet communications tool

... marathoners will be far ahead on the track, while others will fall back." After the race begins, finding one marathoner among the thousands is difficult. Similarly, with asynchronous cells, trying to sort out a single cell response is virtually impossible. But Bar-Joseph has incorporated mathematical tools...

Why the Amazon rainforest is so rich in species

...about why some species survive and multiply, while others remain static or become extinct." Around 40% of t...t reason why some species evolve so rapidly, while others in the same rainforest do not split into new species for tens of millions of years. ...

UCLA imaging study of children with autism finds broken mirror neuron system

...nism may play a crucial role for understanding how others feel and for empathizing with them. All of the children rehearsed the tasks prior to the fMRI scans to assure researchers they could perform the tasks. Both groups performed equally well. Normal brain activity in areas of the brain involving sight a...

Genetic key to growth of new arteries is identified

...w arteries in response to an arterial blockage and others do not," observes Sarkar, who is also an assistant professor of surgery at the University of California, San Francisco. "So it's very important to understand the normal process that allows an animal or a person to grow new arteries when their legs do...

Common molecular 'signature' identified in solid tumors

...ed, or "turned on" in some of the cancers while in others they are underexpressed, or "turned off." In the six types of cancer in the study, the majority (26) of the miRNAs were overexpressed, while 17 were underexpressed. Calin and Volinia also identified several key cancer genes the miRNA signature ta...

Predators keep the world green, ecologists find

...the sites were on predator-free islands, while the others were on the mainland or on islands with a complete or nearly complete suite of predators. They found that, by 1997, small sapling densities on small islands were only 37 percent of those of large land masses and by 2002 this had fallen to just 25 pe...

Portable cocaine sensor developed at UC Santa Barbara

...ome patients metabolize a certain drug quickly and others slowly. Because of this vast variance, there are drugs have not been introduced to the market because of the need for an immediate check of the blood level of the drug in order to prevent death. Plaxco explained that new drugs may be made available w...

Animal models show that anabolic steroids flip the adolescent brain's switch for aggression

...a danger to themselves and to others. Melloni and others researchers also are concerned that drug use during a critical window in brain development can change their wiring for good. He says, "Because the developing brain is more adaptable and pliable, steroids could change the trajectory if administered d...

Study ties 'new' cell-death mechanism to developmental and degenerative brain disorders

...l disorders, some of which emerge in childhood and others in adulthood, affecting one in 17,000 people. Ataxias affect coordination and many basic functions such as walking and speaking. They also may lead to eye movement abnormalities, cognitive decline, epilepsy and other significant deficits. Twenty-sev...

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