Tag: "single" at biology news
Gene-Altered Mouse May Provide New Insights To Parkinson's Disease, Substance Abuse And Schizophrenia
...psychiatric disorders. "We were astonished that a single
genetic deletion would have sucha profound effect on both biology and behavior," Caron said. "Webelieve this mouse will provide an ideal model to study addictive behaviorand psychiatric disease." Caron and his colleagues report their findings in the...
Computer Program For Quicker, More Detailed Mapping
...n a complex manner and aren't due to a defect in a single
Cornell Researchers Precisely Date Wood From Ancient Tomb In Turkey
...f precision, based on the fact that trees put on a single
growth ring per year, is unique." The researchers supplemented their dendrochronology work with radiocarbon "wiggle-matching," a process in which the radiocarbon profiles of the timbers are superimposed on a calibrated time scale and moved until the ...
A Genetic Skeleton Key
...t be con-sistent: The information thatappears on a single
page in thehuman edition may be broken upinto two in the wheat version, orvice versa." Pevzner noted yet another complication."The genes themselves,while related, are quite different.The mouse-edition gene is writtenin mouse language; the human-editi...
New Ultrasensitive Technique For Accurately Characterizing Biomolecules Is Developed By Cornell Chemists
... sample representing 1 percent of the protein in a single
red blood cell using electrospray mass spectrometr...e allows researchers to take samples as small as a single
cell and identify many of its components with unusually high confidence, something that is almost im...
Major Plant Genome Research Project Underway
...re supported by separate awards, each is part of a single
project. "Their activities will be coordinated to maximize efficiency and usefulness," says Clutter, "and information from the project will be widely disseminated so that researchers will gain maximum benefits." The U.S. effort is being dovetailed ...
Cholesterol Anchor Helps Signaling Proteins Direct Development
...ors, helping to direct an organism's growth from a single
fertilized egg into a collection of millions of structured, specialized cells. In animal experiments, hedgehog signals can turn on and off genes in many individual cells, coding for special traits needed to help create limbs, eyes, spinal column, or...
'Juliet' Evades Primate Center Expedition
...where the expedition ventured. They sighted only a single
bamboo lemur andheard the calls of black-and-white ruffed lemurs. "There should have been many more, but hunting in the area is rapidlydepleting the population." And, when Glander and his colleagues exploredthe area where Romeo had been captured thr...
Behemoth Animals May Follow Same Extinction Patterns
...ies. The cause of their demise wasprobably not one single
element, but a complex mix of factors that effectedfood supply and habitats. Because the proboscidean decline is more recent,there is greater possibility of uncovering the complex set of events thatcould bring gigantic animals from glory to extinctio...
Animal Studies Indicate Aging Brain Responsive To Estrogen
...o estrogens, long-term chronicestrogen doses, or a single
acute dose of estrogen. After the treatments, the...nvolved in spatial memory. The scientists'study of single
neurons revealed that the rats exposed to acute estrogentreatment had 40 percent more connective ele...
Duke's Russian Laser Making Ultraviolet Light And Gamma Rays
...enko, PatrickO'Shea and David Straub. "One of the single
largest research projects of its kind, its successreflects the dedicated contributions of the students and staff of the FELLaboratory as well as key contributions from the Budker Institute of NuclearPhysics, Stanford University and Argonne National L...
Optical Microscopy Shines Light On Biology
... biological molecules. "It's important to see what single
proteins do and map their distribution in a system...hanges affect biological processes." By studying a single
molecule, "we can examine how the molecule moves very precisely," he said. "For us, we plan to use t...
Fast Measurement Technique Reveals Early Steps In Protein Folding
...lding sequence, the solution is heated rapidly bya single
pulse from an infrared laser. As the proteins begin twisting intotheir characteristic shapes, a series of pulses from an ultraviolet lasercause some of the amino acids to fluoresce, revealing to the researchersa time-sequence of folding events. "We ...
New Sensor Provides First Instant Test For Toxic E. coli Organism
...rt of the sensor consists of multiple copies of a single
molecule which is fabricated into a thin film. This molecule has a two-part composite structure. The surface of the molecule -- developed by Stevens and Cheng -- binds the bacteria toxin. The backbone underlying this surface is the color-changing sig...
Scientists Identify Gene For Sexual Behavior In Male Flies
...it flies. Their researchis the first to pinpoint a single
gene that works in the brain to governnearly all a...on. "There has been speculation recently that no single
gene could control acomplex behavior. This work shows that a gene can do so -- at leastin fruit flie...
Selenium Supplements Can Reduce Cancer Rates
...is that a nutritional supplement of selenium, as a single
agent, can reduce the risk of cancer," said Gerald... "This is the first time anyone has shown that any single
nutrient can result in such a reduction in cancer risk. The fact that we saw a pattern in lower inc...
Moving DNA Molecules With Magnetic Tweezers
...llowed Wirtz to make critical measurementsof how a single
DNA molecule moves and changes shape. At rest,DNA ...ction coefficient--force divided by velocity--of a single
DNA molecule. In 1995, hisfindings were published in Physical Review Letters. He joined thefaculty o...
Learning From Birds And Bees: Engineers Study Insects For Ideas On Tiny "Micro Air Vehicles"
...e been working tointegrate multiple functions into single
chips. Progress to date hasdemonstrated integrated image acquisition, processing and datacompression, including demonstration of optical-through- waferinterconnects. Drs. JoyLaskar , Nan MarieJokerst , MartinBrooke , AprilBrown and ScottWills...
A Drug Pump On A Computer Chip
...nsors, actuators and electronics are merged onto a single
silicon wafer. The next step will be to shrink the device so it can be mass produced like a computer chip. The research, in the laboratory of Whitaker Investigator Michael Huff at Case Western Reserve University, is driven partly by managed heal...
Emory Researchers Advance Gene Therapy Studies For Metastatic Melanoma Treatment
...s made by all cells, both normal and malignant. A single
cell produces many cytokines; some influence the cell itself (an autocine effect), while others stimulate neighboring tissue, such as immune cells, for a local effect. GM-CSF is produced naturally by some human melanoma tumors, but in amounts too sm...
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