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Tag: "covered" at biology news

Man and mouse share genome structures

...sands of base pairs in length, that are completely covered by tags." The researchers speculate that these unique chromatin structures could be activating sets of HOX genes for specific developmental programs. This global activation may have implications for understanding mechanisms behind certain cancers, B...

Tiny particles could solve billion-dollar problem

...loped by Wong that consists of a gold nanoparticle covered with a thin coat of palladium atoms. As metal particles get progressively smaller, a higher percentage of the atoms in the particle are found on the surface of the particle instead of being locked away inside the metal where they cannot interact wit...

Imaging Lymph Nodes with Nanoparticles

...a centralsuperparamagnetic iron oxide core and are covered by dextran, impartinglong circulation times and biocompatibility. When injectedintravenously, the nanoparticles localize to lymphoid tissue, and areinternalized into macrophages. There is then a decrease in signalintensity on T2- and T2*-weighted ima...

Purdue proves concept of using nano-materials for drug discovery

... to 1 million test chambers. Each chamber would be covered with a membrane containing the proteins, and the c...e liquid was placed outside each vessel so that it covered the opposite side of the membranes. When the liquid diffused through the membrane's pores, it mixed ...

Protein Packages Found To Activate Genes; May Be What Regulates Development And Disease

...t relatively huge sections of chromatin completely covered with tags. This was not seen before by using standard techniques, or by studying one gene at a time. "Finding them was a complete surprise," Bernstein admits. HOX genes, as noted, play vital roles in embryo development. Understanding how they are re...

Open microfluidic and nanofluidic systems

...ve recently been developed, are substrate surfaces covered by molecular monolayers that can be switched by light, temperature, or electric potential. The experiments described in the PNAS study use a polymeric liquid that freezes quickly and can then be scanned directly with the tip of an atomic force micro...

Study shows nanoshells ideal as chemical nanosensors

...d consist of a core ofnon-conducting glass that is covered by a metallic shell, typicallyeither gold or silver. The metal shell "captures" passing light andfocuses it, a property that directly leads to the enormous Ramanenhancements observed. Furthermore, nanoshells can be "tuned" tointeract with specific wa...

Same mutation aided evolution in many fish species, Stanford study finds

...olved independently from marine ancestors that are covered head to hind fin in body armor. Although it's not clear why losing the armor is a benefit to freshwater fish, Kingsley noted that the unarmored fish are lighter and faster than their more burdened marine cousins. In an effort to learn more about how...

Circles Of DNA Might Help Predict Success Of Stem Cell Transplantation

... the world. No family ever pays for treatments not covered by insurance, and families without insurance are never asked to pay. St. Jude is financially supported by ALSAC, its fundraising organization. For more information, please visit http://www.stjude.org. ...

Ice core 'dipstick' indicates West Antarctic ice has thinned less than believed

...Ice Shelf, a part of a bay on the Ross Sea that is covered with floating glacier ice. "Then the whole thing spreads out like oil on water," Waddington said. The West Antarctic Ice Sheet once rested on the bottom of the bay all the way to its "grounding line" at the continental margin in the Ross Sea. Howev...

The BIOS Initiative - open source biotechnology is born

Althought we covered it partially this week , this initiative is so important that it deserve another, more complete description. In a publication today in the prestigious scientific journal, Nature, a team at CAMBIA in Canberra unveils the 'kernel' of the world's firs...

Applied Biosystems Introduces Advanced Gene Expression Service Provider Program

... process and the 5' nuclease detection process are covered by patents owned by Roche Molecular System, Inc. and F. Hoffmann-La Roche Ltd ("Roche"). Performing services using these patented processes may require additional licenses from Applied Biosystems or Roche. For more information, visit http://docs.app...

Harnessing microbes, one by one, to build a better nanoworld

... process and the 5' nuclease detection process are covered by patents owned by Roche Molecular System, Inc. and F. Hoffmann-La Roche Ltd ("Roche"). Performing services using these patented processes may require additional licenses from Applied Biosystems or Roche. For more information, visit http://docs.app...

Biodiversity hotspots identify conservation priorities

...five largest U.S. states). This habitat originally covered 15.7 percent of the Earth's surface, an area equivalent in size to Russia and Australia combined. The new analysis shows that an estimated 50 percent of all vascular plants and 42 percent of terrestrial vertebrates exist only in these 34 hotspots. T...

Affymetrix Licenses Microfluidics Technology From Caliper Life Sciences

...nt licensing fees and royalties on future products covered under the agreement. Further financial details related to the agreement were not disclosed. The agreement announced today is the second agreement since Caliper began an active program to out-license its intellectual property portfolio. The new "LabC...

Medical molecules designed to respond to visible light that can penetrate tissue

If you have ever covered a flashlight with your hand and seen the red light that still comes through, then you have seen light in the therapeutic window ?that magic wavelength that is not absorbed or reflected away by tissue. Scientists believe that they can use light at tha...

Emergence of cancer as major cause of childhood death in developing countries is not being adequately addressed

... the world. No family ever pays for treatments not covered by insurance, and families without insurance are never asked to pay. St. Jude is financially supported by ALSAC, its fund-raising organization. ...

Researchers discover underwater volcano

...he newly formed volcanic cone. Much of Nafanua is covered with yellow "fluff," microbial aggregations that are produced by microscopic life feeding on chemical energy from the volcano's hydrothermal system. As Staudigel and his international team explored the area, they discovered a number of large communit...

To sea or not to sea: When it comes to salmon sex, size sometimes doesn't matter

...d. Much of the present range of Pacific salmon was covered by thick glaciers some 10,000 to 15,000 years ago, so most current populations were founded by strays since then. Thus straying is just as fundamental an attribute of salmon as homing," he says. "Perhaps the offspring should be called strays only if...

Taking the piste out of Alpine vegetation

...eclined. This is due to delayed snow-melt in areas covered with artificial snow, and the fact that artificial snow is made from river and lake water which contains more minerals and other chemical compounds than natural snow. The findings are particularly important as ski resorts begin to feel the heat of c...

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