Tag: "precise" at biology news

NYU Researchers Develop Simple, Predictable And Precise Technique For Arranging DNA Molecules Into Two-Dimensional Crystals

...ee, has developed a simple, predictable and highly precise process forcausing molecules in solution to assemble themselves into two-dimensionalcrystals with pre-programmed topographic features. Such molecular self-assemblypresents a 'bottom-up' approach to the fabrication of objects specified withnanometer p...

New Device Brightens Recycling Efforts

...ing parts, and it does not require precleaning or precise positioning of the plastic material," he says. SpectraCode has installed RP-1 systems at two large-scale recycling facilities and in the Detroit Vehicle Recycling Development Center, a joint research facility of the Big Three automakers. ...

University At Buffalo Team Discovers How The Cell Nucleus Orchestrates Genetic Processes

...ezney, "which opens up the ideathat there may be a precise timing for when certain genes are expressed. Thattiming could turn out to be really important for the normal functioning of thecell," he said, adding that when, for some reason, the timing is not exactlyright, it could be dangerous for the organism. ...

Simple Chemical Switch Steers Migrating Neurons

...cells, called axons, travel great distances tomake precise connections with other neurons. Without such accurateconnectivity, the nervous system would never wire properly. An axon's path towards a target neuron is steered by growth cones thatare located in the tip of the axon. These growth cones receive cu...

Evidence Mounts Against Maintstream Dogma In Embryology, Could Shed New Light On Neurological Defects

...ason, scientists are eager to learn more about the precise role of the human equivalent of the zebrafish cyclops gene in patterning the developing embryo's nervous system....

Aspirin Decreases Genetic Mutations Associated With Inherited Colon Cancer

...may occur during cellreplication. In replication, precise nucleotide pairing is essential. In human cells, it is a protein complex containing hMSH2that attaches to mismatched nucleotides. The cellular repair machinery, withhMLH1, then orchestrates the correction of these errors. "Without hMSH2 or hMLH1the c...

Wistar Scientists Locate Genes Involved In Mammalian Tissue Regeneration

...though the researchers have not yet identified the precise contents of eachlocus, or region, one potential gene is a receptor for retinoic acid, known toplay a role in developmental processes and the growth of skin. Interestingly,retinoic acid is also involved in amphibian regeneration. Similar to what has ...

"Lab On A Chip" For DNA Testing Invented By U-M Engineers

...pment ofa photo-lithographic technique for etching precise hydrophobic regions in theinjection channels of the silicon layer. In contrast to DNA analysis in a standard laboratory---which relies on humanintervention at several stages to manipulate or observe samples and recordresults---the self-contained "lab...

Cell Suicide Prevented By Survival Signals

...sue of the journal Cell ,Steller's team defines a precise molecular target that allows cells from thefruit fly Drosophila to survive in the presence of death-inducingstimuli. For the last several years, influential researchers such as Martin Raffof the Medical Research Council Laboratory for Molecular Ce...

The Comet That Wiped Out The Dinosaurs May Have Washed Up Boulders Onto Hills In Arkansas

...ave," Patterson concludes. He plansto work out the precise age of the Arkansas boulders in an attempt to confirmhis idea....

History Of The Rainforest Told In Song

...m the song of a golden bower bird, we can pick its precise location -whether it belongs to Mt Eden, Mt Windsor, Mr Baldy or Mt Spec. When we analysethe song, the sonograms or sound graphs are quite distinct." Dr. Westcott and colleague Dr. Frederieke Kroon conducted an intriguingexperiment, taping and playi...

Researchers Find That Where There's Muck There's DNA Brass

...organisms, or in quiescent states thatrequire very precise conditions for re-activation. Thus, over 99% of the soil's biodiversity was inaccessible to researchers -until now. University of Warwick biologist, Dr. Elizabeth Wellington (theresearch project leader) will co-ordinate 6 labs across Europe and guide...

UB Stroke Researchers Develop New Technique To Measure Blood Rate-of-flow, Treat Brain Malformations

...lets provide the necessary leading edge to provide precise information on speed of the flow. But because the contrast medium doesn't dissolve and fill the vessel, tracking the oil droplets alone provides no information on the path, or distance, the drop has traveled, which is necessary for determining the ra...

Clues To Molecular Cancer Switches Probed

... of the four DNA basesfor genetic blueprints. The precise order of these units is unique for eachgene. The version with the extra "G" significantly augments production of the MMP-1gene in both normal and malignant cells, the team found. It's as if the switchfor the enzyme is always in the on position. ...

Key Asthma And Allergy Molecule Pictured

...sity andHarvard Medical School have determined the precise shape of the receptormolecule that triggers the allergic response in the immune system. The finding, reported in the Dec. 23 issue of the journal Cell, is the firststructure reported for a member of this family of antibody receptor proteins. Itwas ma...

Gene Therapy Incorporates Molecular Rheostat For Controlled, Long-Term Drug Delivery

...ls exposed to the AAVvectors. "It's a very precise gene switch, a kind of molecular rheostat,"explains Wilson. A common example of a rheostat is the so-called dimmer switchused with some household lights. In mice and in rhesus monkeys, giving more rapamycin stimulated aproportionate rise in p...

Major Clinical Findings By California AIDS Team: HIV Does More Than Kill Off T Cells

...ut that is alteredafter HIV infects the body. The precise mechanism that HIV uses to derail thedifferent parts of this process have been unclear, but the end result is acollapse of the immune system that makes the body vulnerable to theopportunistic infections that cause full-blown AIDS. It had been previo...

Farmers Can Afford To Clean Up Gulf Of Mexico, Analysis Shows

...thing," he says. "No more fall fertilization. More precise application in terms of place and time for spring planting. Buffer zones along streams. Fewer inputs -- about a 20 percent reduction of the amount of nitrogen used." If a farmer just reduces the amount of fertilizer without improving management ...

UD Valentine Science: Cell "Dating" Habits May Promise Healthier Hearts

... combating a wide range of heartdiseases." PAM-1's precise activities remain a mystery, Naik emphasizes, but he planscontinued studies, in collaboration with colleagues including Patricia A.DeLeon, a UD professor of human genetics, who has been investigating anotheradhesive molecule involved in reproduction....

Model Polymers Reveal New Clues to Protein Folding

...University of California at Berkeley. The precise structure of biomolecules often reveals their functionalsecrets, a fact that became clear in the early 1950s when Linus Pauling solvedthe alpha-helix structure of keratin protein and Watson and Crick solved thedouble-helix structure of DNA. Protein...

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