Study indicates certain rules underlie calling behavior of bullfrogs
...hode Island. This rule-driven strategy enables male bullfrogs to call and attract females and maintain territories, yet conserve energy, she said. Conducted in Rhode Island wetlands, the study was published in the journal Ethology last August. Mal...The silence of the clones: new link between DNA replication and 'silent' chromosome architecture
...ropagate complex patterns of gene expression) that enables liver cells to beget liver cells, brain cells to beget brain cells (and so on) as part of the normal development of an organism. However, if genes are inappropriately switched off through their incorporation into a silenced chromatin domain, many typ...Agricultural biotechnology hot topic at ASTA corn & sorghum and soybean seed research conferences
...ate University, will discuss bioinformatics, which enables scientists to predict the expression and function of genes in crops. For example, by understanding the way in which the Bt protein is expressed and regulated in Bt corn, researchers may be able to instruct the corn when to turn Bt expression on and ...Carolina scientists the first to identify and purify liver stem cells
...terize the cells before using them in patients and enables the cells to be shipped worldwide." In liver cell therapy, suspensions of liver cells would be injected into the liver or spleen of patients with liver failure and should reconstitute the patient's liver functions. "Thus, each donated liver can be......etween nerve cells that store memory. Glutamate enables the brain to develop, language to be learned, a new math equation to be grasped, tennis to be mastered and walking to be relearned following a stroke. But without the synapses that allow the chemical signal's transmission from one nerve cell to the...Study provides new details of 'the birth of a virus'
...n Gag, the domain's essential core - the part that enables it to function - often consists of only a handful ... to attach to Gag," Gttlinger says. "This binding enables the 'buds' of virus to leave the cell membrane and spread to other cells. The fact that retroviruses...Scientists reveal details of brain cell communication: implications for learning & memory
...ngs reveal fundamental properties of synapses that enables them to trigger the changes in neurons that underlie learning and memory," says Karel Svoboda, the principal author of the study which will be published tomorrow in Nature. Svoboda, an investigator of the Howard Hughes Medical Institute at Cold Sprin...New N.C. ferry-linked water monitoring begins generating useful data for analysis
... minute. A telemetry system involving a cell phone enables researchers at their laboratories to collect data for analysis anytime they wish. Another automated, refrigerated device collects water samples to be tested for nutrients, algal pigments, dissolved organic matter and suspended solids. "The frequenc...Scientists discover new stage in malarial infection
...ers have identified a previously unknown step that enables the malaria parasite to spread in the bloodstream. And they have found a way to block this key event. The findings, reported in the Dec. 12 online edition of Proceedings of the National Academy of Sciences, may lead to promising targets for drug deve...Translating the human genome into protein function: structural genomics research at Columbia
...al processes. Detailed structural information also enables researchers to model a protein's interactions with... Gaetano Montelione, Rutgers University, the grant enables researchers to develop techniques in both X-ray crystallography and NMR spectroscopy for determining...Novel route to lupus-like disease in mice
...om growing glycan chains on cell surfaces. Pruning enables more complex growth by glycosylationin much the same way that pruning a tree alters its growth pattern. Without the enzyme, the cells show abnormal surface glycan formation. In earlier studies with mice, Marth and his colleagues had observed abnormal...US and Japanese scientists develop new test for male infertility
... some of the hidden intrinsic sperm defects. "This enables a more accurate diagnosis and could direct the treatment of infertility towards the man, sparing his partner excessive examinations and possibly even unnecessary treatments," he said. The research team believes SUTI may also have a role in future tre......es to large commercial facilities. Its versatility enables Orchid's Platform Propagation strategy, in which Orchid partners with industry leaders to make SNP-IT enabled products available on a wide variety of instrument platforms. Orchid provides high throughput SNP scoring services to pharmaceutical, biotec...Debate over genetically modified food gets an educational home on the web
...stigator for the SCOPE project. The SCOPE project enables scientists to communicate to a broader audience without wasting valuable time, Linn said. And by collaborating with teachers, scientists, and technologists we can understand a contemporary controversy from multiple perspectives while designing materi...Rat study shows high-fat diet impairs concentration and memory
...ain and is critical for normal memory function. It enables us to register new memories and recall those memories after a period of time. In the study, young adult rats were divided into three dietary groups -- those fed high-fat foods derived from saturated fat (beef tallow) or polyunsaturated fat (soybean o...Johns Hopkins-led team discovers gene defect linked to lung disease
...f surfactant, a mixture of fats and proteins which enables the lungs to expand and contract easily with each breath, and which plays an important role in respiratory adaptation in newborns by maintaining the low surface tension needed to prevent lung collapse on exhalation. Deficiency of surfactant causes re...Gene-trapping method powers discovery of new brain-wiring signals
...f connections in the mammalian brain. Thetechnique enables scientists to identify new genes and to determine which genesare responsible for defects in brain wiring that are observed duringdevelopment. The scientists believe that this technique is likely to acceleratethe discovery of new molecules involved in...Researchers identify 170 genes involved in Crohn's disease and ulcerative colitis
...ecently developed DNA microarray technology, which enables the simultaneous screening of thousands of genes for expression. Scientists isolate total RNA, a pool of all gene products from colonic tissue, and make complimentary DNA to probe the gene chip. If the gene is expressed, its product in the pool will ...Scientists find new supressor gene involved in breast, prostate and other cancers
...s how the information in the human genome sequence enables scientists in different fields to make research contributions far beyond their own specialty, says NHGRI scientific director Jeffrey M. Trent, Ph.D. "Dr. Green's laboratory has been heavily involved in mapping and sequencing human chromosome 7 for th......overed a unique system of overlapping sensors that enables the creature to tell smells apart. The system seems well designed for the nerve-challenged worm. In mice and humans, each of millions of odor sensing nerves has only one type of odor detecting receptor, allowing the brain to distinguish between odors...