Tag: "separates" at biology news

Scientists study roundworms for behavior patterns

...e. Garcia fishes C. elegans from his petri dishes, separates out the males, and alters their genes with mutagenic chemicals. By mutating them, he has discovered that he can short-circuit aspects of their mating behavior. Normally, the little wrigglers do not display aspects of mating behavior until they bump i...

Southern 'stroke belt' study initiates nationwide study

... "spun" in a high-speed centrifuge, a machinewhich separates cells in the blood from the liquid needed for analysis.Once processing is complete, each blood sample will be divided and storedto allow for multiple types of tests, and information about each samplewill be scanned into a computer database. Some samp...

Illinois lands research center for advanced water purification

...r isobutane. As clathrates form, the ocean's salt separates out, offering a potential supply of fresh water. Scientists will investigate techniques to efficiently split these materials into clean drinking water and fuel....

U.Va. researchers identify switching action by protein 'gate-keepers' in cell nucleus

...The nucleus of a cell is surrounded by a wall that separates the DNA from the rest of the cell. This wall contains thousands of tunnels, called pores, through which the trucks and their cargo travel. Millions of cargo molecules are carried in and out of each nucleus every minute. This heavy traffic of proteins...

Protein complex found to regulate first step in human blood clotting

... formation of filaments inside dividing cells also separates cytoplasm into the two daughter cells, so that each inherits the right amount of maternal material. In these images, human blood platelets have been stained for actin filaments (green) and the Arp2/3 protein complex (red). In the first stage, top, th...

New research questions evidence for earliest life on earth

...een, the process of metabolism in living organisms separates different weights of carbon, leaving what has been thought to be a unique chemical "fingerprint" of past life. However, the article by Christopher Fedo, from The George Washington University's Department of Earth and Environmental Sciences, and Marti...

Researcher traces gene development in 'last common link'

...ebrate animals has found a key genetic change that separates the spineless from the backboned. Jeremy Gibson-Brown, Ph.D., assistant professor of biology at Washington University in St. Louis, studies amphioxus, a small marine worm, a primitive invertebrate species that is the closest living invertebrate r...

New process speeds protein separation

...ew process developed at the University of Michigan separates cellular proteins in hours instead of the days tha...onto a gel and exposed to an electric field, which separates the various proteins on the basis of their charges. Next, the proteins are sorted in the second dim...

Unexpected links found between many RNA viruses

...million children a year in developing countries -- separates its strands and copies one to replicate itself. Ahlquist and his colleagues discovered that, although the viruses seem to take distinct routes to replication, all three types use related pathways and structures to replicate their genes. By linking th...

High tech movies reveal information transfer within cells

... Rather, a disc of membrane, like a closed door, separates the two vacuoles. It suddenly opens by swinging aside, and the two vacuoles become one. This removable door remains intact even as the contents of the two vacuoles mix. "The more we understand how such fusion events occur, the more we have the abi...

Baboons can think abstractly, in the first study to show that a non-human, non-ape animal shares a central aspect of human intelligence

...evolution of human intelligence and the stuff that separates homo sapiens from other animals. A trans-Atlantic team of psychologists has found evidence of abstract thought in baboons, significant because baboons are "old world monkeys," part of a different primate "super family" that -- some 30 million years ...

Researchers first to catalogue interactions of an organism's proteins

... "proteome," or roster of proteins. That procedure separates individual yeast proteins and prepares each for analysis on matchbook-sized "proteome chips." Fungal Genomics Lab scientists also organized the vast amount of data that went into analyzing 93.5 percent of yeast's 6,200 proteins, and assisted in the d...

Drinking Water from Forests and Grasslands: A Synthesis of the Scientific Literature

...d with drinking water quality. The books structure separates it into chapters by types of land use; but the authors recognize that in most practical situations, effects on source waters result from the cumulative effects of multiple land uses that often overlap in space and change over time. The inclusion of a...

Scientists seek genetic clues to emphysema and chronic bronchitis

...dical and Research Center are trying to learn what separates the smokers who stay healthy from the ones who develop COPD. They believe the answers lie in the smokers' genes. "We believe a person's genes cause them to produce a protein that protects their lungs against smoke-induced damage, or one that makes th...

Study of poisonous snakes boosts old Batesian principle of mimicry

...le in the scarlet king snake, a black band usually separates the lighter colors. The researchers created 1,200 life-size models of coral and scarlet king snakes out of plasticine, a mixture of wax and modeling clay and placed the copies in the wild, both within the coral snake's natural range in the southe...

Friendly microbes control intestinal genes, study finds

... the cellular barrier that lines the intestine and separates us from dangerous organisms and ingested substances. Other genes affected by the bacterium regulate how potentially toxic compounds are metabolized, how blood vessels are formed and how the gut matures during the post-natal period. "We were amazed ...

Researchers discover major diabetes susceptibility gene

...ng DNA, sometimes referred to as junk DNA' -- that separates the exons. This non-functional genetic matter is spliced out when the DNA is transcribed into RNA. The tiny genetic change that can cause susceptibility to diabetes is located in intron 3, at a location dubbed UCSNP-43 (for University of Chicago S...

A molecular motor's key role in cell birth

...called the mitotic spindle) that ensnares and then separates the chromosomes. During mitosis, this spindle must elongate so that one of its ends pushes into the daughter cell, dragging with it one complete set of chromosomes. Mitosis requires proper orientation of the spindle toward the new, developing cell; o...

New test for radiation damage to DNA developed at Brookhaven Lab

..., then chops the DNA with the enzymes, and finally separates and counts the fragments on electrophoretic gels to measure the levels of clusters containing each kind of damage. The data they've collected so far, both from DNA in solution and from human cell cultures, indicate that radiation does induce clusters...

University of Florida scientist maps brain reactions to food

... As it turns out, 10 minutes is generally all that separates nutritiously satisfied from excessively gorged. That knowledge could be key in the diagnosis and treatment of obesity and associated conditions. By mapping changes in blood flow and oxygenation using a technique called functional magnetic resonan...

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