What women want makes a difference
...mosomes. The most promising genes in both regions appear to be involved with olfaction and on this basis, the authors propose a novel model of speciation via mating discrimination in Drosophila pseudoobscura based on the combined response to auditory and olfactory cues. These findings mark a major t...This is your fly's brain on drugs
...ched in the brain, and its cocaine-related effects appear to localize in the ventral lateral neurons (LNvs), which provide the fly with an internal clock, driving circadian activities even in the absence of light. However, it appears that these neurons modulate cocaine sensitivity independently of their ro...Livestock grazing study finds moderate grazing beneficial to Great Basin plant communities
...ears, according to the researchers. The exclosures appear to contain more cheatgrass than the grazed areas, Perryman said. Graduate student Danielle Courtois, now with the New Mexico Bureau of Land Management, was the lead author of the study. Animal biotechnology Associate Professor Hussein Hussein, of Nev...Scientists generate human islet precursor cells in culture
...These precursor cells are capable of expansion and appear to naturally and efficiently differentiate into clusters of islet-like cells. This work may help to clarify the natural lifecycle of the beta cell and may eventually have applications for diabetes treatment. The study appears on-line today in Scien...Science survey ranks top biopharma employers
...he business office of the journal, Science , will appear in a special supplement of the 26 November issue. Similar to a 2003 Science ranking of biopharma employers, the 2004 survey sought to identify the companies with the best reputations as employers, based on 1162 survey responses from Science reade...Scientists first to grow common cause of food poisoning in the lab
...teractions with its host. For example, mice do not appear to be able to vomit. Additionally, researchers aren't sure yet whether MNV-1 can make mice with normal immune systems sick. "The bottom line is that this mouse model provides us with a very useful way to examine certain similar aspects of the norovi...Differences in gene usage dramatically change bacteria's 'lifestyles'
...nt analyses of the human genome. "Humans not only appear to have far fewer genes than expected, there also ...tion, Groisman explains, these regulatory sections appear to take up larger portions of the DNA, allowing genes to be turned on and off in ways that are more ...Study in Royal Society journal on possible genetic factors in social responsiblity
...y in regions of Africa and Asia. Higher latitudes appear to become more suitable for the Argentine ant under global climate change scenarios. Because invasion processes have the potential to alter global biodiversity considerably, this improved knowledge of the potential geography of the Argentine ant shou...A global view of gene expression in the aging kidney
... in a wide range of human tissues. Other organisms appear to lack these changes, however, prompting the authors to argue that understanding aging in humans will require human subjects. Most importantly, the genetic profile of the tissue samples correlated with the physiological decline of an aging ki...UT Southwestern initiating trials in humans for ricin vaccine
...few hours of exposure, and because symptoms do not appear until later and often mimic other illnesses, individuals often do not know if they have been exposed until it is too late for treatment, Dr. Vitetta said. Because castor beans are readily available, public health officials warn that ricin could be us...Study suggests nutrient decline in garden crops over past 50 years
...based on U.S. Department of Agriculture data, will appear in the December issue of the Journal of the American College of Nutrition . Its lead author is Dr. Donald Davis of the university's Biochemical Institute in the Department of Chemistry and Biochemistry. His coauthors are Drs. Melvin Epp and Hugh Rio...Revisiting the vertebrate invasion of the land
...ir invasion of the land during the Devonian period appear in the September/October 2004 issue of Physiological and Biochemical Zoology. Although the fossil record of this transition remains far from complete, new discoveries have increased the resolution of the morphological sequence, documented the relati...Study: Eat leafy green veggies to help prevent cataracts
...iolet radiation from sunlight and oxidative stress appear to be the most relevant in this disease," Bomser said. "Our results are the first to provide physical evidence suggesting that lutein and zeaxanthin decrease damage caused by ultraviolet radiation." The study appears in the current issue of the...Chimpanzee brains are asymmetrical in key areas and their handedness reflects it
...derstand what makes us human. Two related reports appear in the December issue of Behavioral Neuroscience, ... non-limbic parts of chimpanzee brains, which also appear human-like in their patterns of asymmetry. This fact, especially if studied in the context of funct...Efforts to clone primates move forward
...observed. Embryos created through nuclear transfer appear to be inferior to fertilized ones. "What this shows is that the Korean method for efficient human somatic cell nuclear transfer is equally effective for nonhuman primates, allowing the further progress toward development of an animal model which para...Stanford study links obesity to hormonal changes from lack of sleep
...xercise habits. "The effect must be very strong to appear in [this entire] population," he said. "It was quite amazing that a hormone can track a person's self-reported amount of sleep so well," he added. "To my knowledge, this is the first time that a peripheral marker in the blood is shown to cor...Researchers discover direct link between agricultural runoff and massive algal blooms in the sea
... year, and right after each one, you'd see a bloom appear within a matter of days." Each bloom was enormous, he said, covering from 19 to 223 square miles (50 to 577 square kilometers) of the Sea of Cortez and lasting several days. "Sometimes eddies actually pulled the plumes across the gulf, from the mainl...Wolves gone, western ecosystems suffer
...treams, forests and wildlife. "It would appear that the loss of a keystone predator, the gray wolf, across vast areas of the American West may have set the stage for previously unrecognized and unappreciated ecological changes in riparian and upland plant communities, and the functions they provi...Scientists uncover clues to the mystery of 'gene deserts'
...iversity. The papers describing both projects will appear in the January print issue of Genome Research. ...UCSD researchers derive lessons about human evolution from chicken genome
...of the European Molecular Biology Laboratory, will appear in the January 2005 issue of Genome Research. "Looking at chicken versus mammals, we found that in the chicken genome there is a much higher rate of reordering within chromosomes than movement from one chromosome to another--2.8 times as much," said...