New Sensor Provides First Instant Test For Toxic E. coli Organism
Researchers have developed a sensor that, for the first time, can instantlydetect the presence of toxic E. coli bacteria. Contamination by this bacteriais responsible for recent illnesses and deaths in the United States involvingfruit drinks and fast-food hamburgers, a massive outburst of food poisoning ...Scientists Identify Gene For Sexual Behavior In Male Flies
...behavior in male fruit flies. Their researchis the first to pinpoint a single gene that works in the brain ...e male fly's elaborate courtship ritual-- from its first interest in a female through its rhythmic courtingsong, to its attempts to mate. Part of a group of ...Methane Deep In Ocean Crust Could Feed Chemical-Hungry Microorganisms
...ways in magma chambers below the seafloor: The first involves fluids -- mainly water and fluids rich in...een thrust up to where humans can drill it for the first time and get samples that have not been affected or weathered by seawater or the atmosphere. For h...Disease Resistance Mechanism Identified in Plants
...ant disease resistance has been identified for the first time by researchers funded by the National Science...rent pathogens," Martin said. "This is the first demonstration that there is a lock-and-key mechanism at the molecular level involved with the plant'...Mechanism For Disease Resistance Identified In Plants
...ant disease resistance has been identified for the first time by researchers funded by the National Science...rent pathogens," Martin said. "This is the first demonstration that there is a lock-and-key mechanism at the molecular level involved with the plant'...Researchers Find How Disease-resistant Plants Recognize Bacteria
... Since the 1940s, when a scientist named H.H. Flor first proposed that disease resistance in plants require...ork. In 1993, Martin was successful in cloning the first disease-resistance gene in crop plants, Pto , which is involved in gene-for-gene disease resistance...Pinpoint Gene Control Holds Promise For Nervous System Studies
... the Januaryissue of Nature Biotechnology on the first demonstrationof the technology: permanently turnin...ofcontrol." Graduate student Andrew Brooks is first author of the paper.Also contributing were scientist Nariman Panahian, researchassociate Bhaskar Muh...New Finding Suggests "HATs" Are Key To Gene Activation Puzzle
... as a template for protein production. This is the first HAT discovered that has a known role intranscription. "These findings suggest a distinct mechanism by which gene activation is occurring: The cell's transcriptionalapparatus has chromatin-unfolding properties," says Mizzen. "This is theclosest w...Proteins Interacting With RNA And DNA Are Surprisingly Similar
...DNA-binding proteins, called homeodomain proteins, first emerged onlyabout 400million years ago, Draper said. In the cells of living organisms, L11 attaches to ribosomes,particles thatproduce proteins. The L11 enables the ribosomes to make proteinstwice asfast. When it attaches to the ribosomes in bacteria...ORNL Mice Helping Researchers Isolate, Identify Causes Of Cancer
...emia," Justice said. When these mouse strains were first developed, scientists didn't know thereason the mice developed leukemia. Now, however, Justice and colleaguesknow that the mice get cancer because of murine leukemia retroviruses. "One way these retroviruses can cause cancer is to integrate near and ...Selenium Supplements Can Reduce Cancer Rates
... high selenium status and cancer risk, this is the first double-blind, placebo-controlled cancer prevention...ium nutrition research in the world. "This is the first time anyone has shown that any single nutrient can result in such a reduction in cancer risk. The f...Moving DNA Molecules With Magnetic Tweezers
...n his home city of Brussels, Belgium, tobecome the first scientist to measure the friction coefficient--force divided by velocity--of a single DNA molecule. In 1995, hisfindings were published in Physical Review Letters. He joined thefaculty of Hopkins' WhitingSchool of Engineering two years ago. For his r...Bog Beetle, Misidentified For 85 Years, Is 'Discovered' At Cornell
...me 300 years, and we still don't know it all." The first Platynus indecentis species that Will and Liebherr examined at Cornell was on found at McLean Bog. Other specimens were found in boggy areas at Fall Creek, in Tompkins County. "It just shows the complexity of the systems surrounding us," Liebherr s...Bottom-up Ecological Processes Better For Clear Waters, Study Finds
... credits as a direct influence in thework. In the first step toward tackling this problem last year, Brett and Goldmanpublished a meta-analysis of 54 studies, providing unequivocal support forthe trophic cascade hypothesis in the Proceedings of the National Academyof Sciences. Next, the pair set out to ...Bigger Biology Tackled Through Keyboards
...hePrinceton University Environmental Institute and first author of the paper."There's been continuous progress over the last 25 years; but, likedoing a crossword puzzle, it's really hard to make progress in the beginningand then at a certain point it goes very fast." Computational biology is at that point...The CIA Would Like To Know What Scientists Are Seeing Over The Rainbow
... black-and-white banding. Chromosome banding was first developed in the early 1970s, when it was observed that each human chromosome portrayed a characteristic pattern of bands when exposed to chemical stains. This allowed researchers to identify and sort out human chromosomes under the microscope not o...Laser Microscope At Cornell Images Serotonin In Live Cells
... in live cells in real time, and they have for the first time measured the concentration of serotonin in secretory granules. The microscope, which uses pulsed lasers for excitation, can record ultraviolet (UV) fluorescence images of live cells without using UV illumination to detect and image cellular acti...Researchers Corral Millions Of Microscopic Membranes
...or automation. The researchers believe this is the first time that microfabrication techniques have been ap...l structure of a number of these compounds for the first time. A potential biomedical application is cell screening of the type required for leukemia patient...Stronger Evidence That Global Climate Change Can Reduce The Variety Of Life
...eleased Thursday (Feb. 13, 1997). "For the first time, we have been able to plot the ups and downs inbiodiversity in a particular group of animals through 11 complete periodsof drastic global climate change," said Dr. Thomas M. Cronin, researchgeologist with the U.S. Geological Survey. "The rise a...Scientists Determine 3-D Crystal Structure Of Cancer-Causing Protein
...sely related tyrosine kinases, named for src , the first oncogene that was found to be the mutated form of ...anafusa, Ph.D., Leon Hess Professor, was among the first to provide directevidence for the existence of Src in normal cells. Rockefeller faculty have made...