Tag: "bridge" at biology news

Low Oxygen, Key To Fetal Development, Also Offers Cancer Clues

...pregnancy, controlling thedevelopment of the vital bridge between mother and baby. The finding also she...structure in mammals that develops and serves as a bridge betweenmother and baby during pregnancy. The team studied cytotrophoblasts, the cells from thep...

New Dinosaur Finds In Antarctica Paint Fuller Picture Of Past Ecosystem

... "This gives us moresupport for the idea of a land bridge between South America and Antarctica at that time." The landbridge was used not only by dinosaurs but probably also by marsupial mammals dispersing fromthe Americas to Australia via Antarctica. The hadrosaurs are a distinctive group of American din...

DNA Used To Create Self Assembling Conducting Wire: Breakthrough Will Lead To Next Leap In Emerging Nanoelectronics

...rming a scaffold for depositing silver. To bridge the gap between the electrodes, the scientists deposit adroplet of water laced with the DNA spans across the two electrodes. Then theyuse a tiny glass tube to create suction on one end of the droplet. This inducesa river-like flow that stretches the ...

Tiny Jamaican Tree Crab Made Big And Fast Evolutionary Leap, Scientists Discover

...geological studies, the closing of the Panama land bridge betweenNorth and South America 3.1 million years ago that separated species of marinecrabs into two breeding groups--those living on the Caribbean side of Panama andthose living on the Pacific side. Using this date as a secure calibrationpoint--and ...

New Gene Therapy Technique Results In Efficient Gene Delivery

... (ALV). When applied to cultured cells, theprotein bridge allowed the virus not only to bind but also enter ...nd Snitkovsky created the EGF-ALV receptor protein bridge and applied it to aseries of cell types, including one with the normal EGF receptor and onewithout. ...

Rewiring The Brain

...limbs. OP-1 has already proved its ability to help bridge gaps betweenbroken bones (New Scientist, Science, 18 December 1993, p 20) and CreativeBioMolecules is now close to having the procedure approved by the US Food andDrug Administration. The company is also progressing with work showing that OP-1helps t...

Researchers Identify A Protein Critical For T Cell Development And Activation

...ymes, but they can enhance reactions by creating a bridge thatbrings proteins together. "Our thinking was that perhaps SLP-76 played an important role in lymphocyte(white blood cell) activation," Koretzky said. He and his colleagues tested thishypothesis by manipulating the gene that produces the SLP-76 pro...

National Science Foundation Is Taking Small Business Into A New Phase Of Innovation

...ward four grants in a newpilot program intended to bridge the gap between technology research andcommercialization by providing incentives for Small Business Innovation Research(SBIR) grantees to seek partnerships with investors. The new SBIR Phase IIBPilot Program supplements the already successful SBIR e...

Discovery Of New Large, Predatory Dinosaur Reported In Science

...th then colonized the Southerncontinent via a land bridge across the seaway. "This finding will add significant information to the idea that there wastraffic across the Tethys seaway during the Cretaceous Period," said Sereno. "Weare trying to understand evolution in a fragmenting world." A news conferen...

Cellular Target Of Leprosy, Deadly Viruses Found

...fect cells, and that thelaminin molecule acts as a bridge between the bacterium and DG. The researchers also found that a combined bacterium-laminin fragment wouldbind to both rat and human Schwann cells, which normally surround and protectnerve cells. When the bacterium was first exposed to isolated DG i...

Pioneering Research Could Lead To Treatment

...aid. "Maybe this technique could be used tobuild a bridge of nerve cells that could be placed over the injured area." Thetissue could also be used to better understand and perhaps develop cures forneurological disorders. And, while they haven't tried this technique, known as direct-writelithography,...

Gap Widening Between Genetic And Behavioral Research

...mediatelyoutside the nucleus of a cell. To bridge the chasm, he says, "we need a new way of talking about andconceptualizing health research," one that incorporates multiple levels ofresearch. "The interpretation of findings from single-level research might benefitfrom the consideration of r...

Duke Geologist Decries Using Engineering Models To Predict Natural Phenomena

...sing the performance ofconstruction materials in a bridge or building -- are useful, Pilkeyacknowledged. "Modeling steel and concrete is fine," he said. "But now engineershave stepped into natural systems and they want to model beaches. Well, theycan't do that. "In general, they can't model any natu...

NYU And Rockefeller Scientists Design Molecules That Stymie A Notorious Bug

...ocks of peptides, and an unusual sulfur-containing bridge called athiol ester. The inhibitor compounds were designed by replacing the thiol-esterbridge with other compounds, but retaining the peptides' ring structure. In the study, the researchers also were able to dramatically weaken Staphinfect...

New Insights Into The Transport Machinery Of The Cell: A Single Protein Substitutes The Regulatory Machinery Specifying Endosome Fusion In Vitro

...tments via specific organellescalled endosomes. To bridge the distance between the cell surface and theendosomes, small membrane engulfed vesicles bud from the cell surface like soapbubbles and surround the cargo. Inside the cells there are thousands of suchshuttle vesicles that have an important task: to s...

New Biomaterial May Replace Arteries, Knee Cartilage

...ria can serve as a nerve guide tocreate a physical bridge that could dramatically increase the speed at whichsevered nerves heal. "This ability to speed the healing process could eventuallyhelp patients with spinal cord injuries, like (actor) Christopher Reeve's, towalk again," Ku said. As an impla...

Flatworms Are Oldest Living Ancestors To Those Of Us With Right And Left Sides, Reported In The 19 March Issue Of Science

...loblasts fromtriploblasts may be the first item to bridge the gap and to give us a betterunderstanding of how the major body plans emerged," said Bagu....

Porous Silicon Joining Humans To Machines

...ials be successful porous silicon could be used to bridge thegap between a mechanical device and human tissue by transmitting the signals andinformation from a device to the nervous system and back again. Producingporous silicon is a difficult process to control and research is currentlyunderway to find wa...

Scientists Determine Atomic Structure Of Lego-Like Molecule That Self-Assembles Into Cell's Cargo Capsule

...ce. This protein, known as an adaptor, acts asboth bridge tender and bridge, binding to a specific receptor-cargo package onthe outside the cell, and then to the clathrin molecule inside the cellmembrane. When triggered by the adaptor, the three-legged clathrin molecules line up withone another and begin ...

New targets for nerve diseases, nerve regrowth: It's all in the handshake

... They've verified a previously suspected molecular bridge between nervecells and their surroundings which, when broken, causes nerves to deteriorate ina way apparently identical to a variety of neurodegenerative diseases. Theresearch adds new insight on nerve disease as well as a new focus for researchon s...

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