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Tag: "precise" at biology news

Wisconsin scientists grow critical nerve cells

...stages, each requiring a unique growing medium and precise timing. To start, the Wisconsin team generated neural stem cells from the embryonic stem cells. They then transformed the neural cells into progenitor cells of motor neurons, which in turn developed in a lab dish into spinal motor neuron cells. The ...

Priming embryonic stem cells to fulfill their promise

...aper a technique that enabled them to identify the precise mixof proteins that optimally prompted mouse embryonic stem cells to beginthe differentiation process into liver cells. Bhatia, Chien, and Flaimdesigned the technique with other cell biologists in mind so that anyof them could duplicate it with off-t...

Plants respond similarly to signals from friends, enemies

...nd later galls or knots on it. "We don't know the precise structure of Nematode factor, but it appears that the nematodes may have actually acquired genes from rhizobia to exploit this signal pathway," Bird says. ### The research was funded by the National Science Foundation and the North Carolina Researc...

Research on Worms Yields Clues on Aging

...re continuing this line ofresearch to identify the precise functions of the nervous system thatcause the worms to live longer."Because the researchers found that anticonvulsants affect the nervoussystem of C. elegans, they also plan to use the worms as modelorganisms to investigate how the drugs inhibit seiz...

“Nano-scissors?laser shows precise surgical capability

...ultra-short pulse laser that can perform extremely precise surgery ontiny roundworms may be the key to understanding nerve regeneration andis an important step toward treatment of human neurological disease,according to research published in the Dec. 16 issue of Nature. Dr.Adela Ben-Yakar, an assistant prof...

New Clues Add 40,000 Years to Age of Human Species

...ragments from two sediment layers were perfect for precise isotopic dating," says McDougall. “The pumice clasts are produced by explosive volcanic eruptions, and the rocks were probably carried to the Lake Turkana basin soon after, providing a time stamp for nearby sediments,?he adds. The results revealed ...

Poplar trees redirect resources in response to simulated attack

...y allows for taking a snapshot in time showing the precise location of the radiotracer within the plant. With this and other techniques, the scientists can compare what that plant does with the carbon dioxide both before and after an attack. "Carbon dioxide is a plant's major resource. To see how it is allo...

Scientists discover the cellular roots of graying hair

...ray,?yet scientists have been unableto explain the precise cause of this usually unwelcome transformation.In a report posted today on the Web site of the journal Science,researchers from Dana-Farber Cancer Institute and Children’s HospitalBoston say they have found the cellular cause of graying hair whileinv...

Fundamental Finding Yields Insight into Stem Cells, Cancer; Opens Door to Drug Discovery

...ray,?yet scientists have been unableto explain the precise cause of this usually unwelcome transformation.In a report posted today on the Web site of the journal Science,researchers from Dana-Farber Cancer Institute and Children’s HospitalBoston say they have found the cellular cause of graying hair whileinv...

Weizmann Institute scientists develop a new approach for directing treatment to metastasized prostate cancer in the bones.

...ray,?yet scientists have been unableto explain the precise cause of this usually unwelcome transformation.In a report posted today on the Web site of the journal Science,researchers from Dana-Farber Cancer Institute and Children’s HospitalBoston say they have found the cellular cause of graying hair whileinv...

Open microfluidic and nanofluidic systems

...well-defined geometry by which one can measure the precise amount of liquid contained in them; they should be able to confine variable amounts of liquid; and they should be accessible in such a way that one can add and extract liquid in a convenient manner. An appealing design principle for such microcompar...

Nanogen Issued Patent for Electronic Microarray With Memory

...c tests. Using local memory circuits provides for precise control of the currents delivered to individual el...s. Storing critical voltage information allows for precise control of the biological molecules during analysis and increases data management efficiency by trac...

Scientists discover unique microbe in California's largest lake

...ctural feature of the ribosome that makeslarge and precise movements during protein synthesis, but its exactfunction is still unknown. The next challenge, Miller says, will be todetermine whether this example of instant evolutionary innovation bygenetic exchange has in fact had consequences for ribosome func...

UCLA scientists transform HIV into cancer-seeking missile

...t can travel through the blood and aim itself at a precise location, thereby minimizing harmful side effects,...est whether we can direct therapeutic genes to the precise location where cancer cells reside," Chen said. "This approach offers many potential applications fo...

Duke Chemists Isolating Individual Molecules Of Toxic Protein In Alzheimer's, Parkinson's Disease

... aggregation. The scientists are also seeking the precise point during fibril formation when interactions between monomers become irreversible. Defining that point is important because "the fibrils are virtually indestructible once formed," he said. "How all these monomers interact to form these amyloid fi...

Bird Brains Show How Trial and Error May Contribute to Learning

... bird twitters and trigger stimulations to LMAN at precise moments to elicit measurable effects on a predetermined syllable, song after song. The researchers found that different areas of LMAN tuned the same note in different directions, one area raising the pitch of a certain note and another area lowering...

Examination of internal 'wiring' of yeast, worm, and fly reveals conserved circuits

...ng technology permitted biologists to identify the precise subunit sequence of every gene in the genomes of e...on have been combined with databases that list the precise subunit sequence of proteins as well. Cross-species DNA and protein comparisons have become routine ...

Affymetrix and Stratagene Announce Strategic Software Alliance

...Assist Lite software will provide highly accurate, precise and sensitive methods needed to support expression research," said Jason Goncalves, General Manager of Stratagene's software solutions business. "We've placed these capabilities in a software tool designed for life scientists, and the result will be ...

Researchers develop rapid diagnostic tool for pathogen identification

...d breadth. Mass Tag PCR provides the ability to be precise in identification, as well as the ability to apply current diagnostics to more than one pathogen at a time, thereby reducing the time needed for differential diagnosis. “We focused first on respiratory diseases because differential diagnosis is a co...

Researchers make gains in understanding antibiotic resistance

...Steitz. "It is becoming critical to understand the precise structural basis of resistance and even more important to do something about it." Steitz cited, for example, recent statistics published in the journal Nature, stating that hospitals in the United States see some two million cases of antibiotic-resis...

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