Ancient DNA provides clues to the evolution of social behavior
...don't have a lot of resilience for dealing with an unexpected event.'' According to Chan, the evolution of the colonial tuco-tuco's social behavior may be linked to the population bottleneck. Because all surviving colonial tuco-tucos are closely related, it makes sense evolutionarily for individuals to cooperat...Novel molecular 'signature' marks DNA of embryonic stem cells
...eplace damaged cells. "This is an entirely new and unexpected discovery," said Brad Bernstein, lead author of the study, assistant professor at Massachusetts General Hospital and Harvard Medical School, and a researcher in the Chemical Biology program at the Broad Institute. "It has allowed us to glimpse the mo...Clues to breast cancer hidden inside stem cells
...n three-dimensional breast cell cultures to reveal unexpected subtleties about these stem cells that could explain why they spawn malignancies. These stem cells, Valgardur Sigurdsson remarked during the EuroSTELLS Conference in Venice, Italy (19-21 March), could become targets for cancer treatment, leading to ...Epstein-Barr virus might kick-start multiple sclerosis
...on epitope-spreading. "This was an interesting and unexpected finding," said Edwards. "At this point, I really believed we had a story." Finally, the team discovered that the hyper-reactive T cells belonged to the CD4 compartment of memory T cells and that these cells were strong producers of interferon-gamma, ...In 3D, early fat development first requires 'remodeling'
... noticed, however, that the mice seemed to have an unexpected lack of white adipose tissue. Indeed, they later confirmed that the only white fat the mice had consisted of abnormally small "mini-adipocytes." Weiss first suspected the mutant mice were simply malnourished as a result of their other deficiencies. H...Balancing male fertility and disease resistance
...le fertility and pathogen resistance, providing an unexpected genetic link between reproductive success and the disease resistance. Dr. Wang and colleagues characterized a new disease resistance (R) gene in rice, xa13, whose expression tips the balance between fertility and pathogen defense. The recessive xa13...Just like us, social stress prompts hamsters to overeat, gain weight
...n only two of the fat measures. Still, this was an unexpected result. "In humans, unpredictable [stress] events are more aversive than predictable events, causing greater alterations in homeostasis and thus increased stress," the authors wrote. "In addition, previous research suggests that unpredictable events...Global team of scientists describes new genus of African monkey: First in 83 years
...zania have played an important and until recently unexpected role as a refuge for many species long extinct elsewhere." This global collaboration reflects the speed and value of the new phenomenon of conducting research across many time zones. Sargis was the first to receive Davenport's emails from Tanzania....Massive duplication of genes may solve Darwin's 'abominable mystery' about flowering plants
...lants could explain their sudden evolution." One unexpected observation from the study is the relatively slow accumulation of mutations in primitive flowering plants like the yellow water lily (Nuphar). "We can view these basal angiosperms like the Hubble Space Telescope, which helps us get a deeper look int...... Biological Regulation Department, some completely unexpected results of biopsies performed on women with fertility problems have led to a new path of scientific discovery that may hold hope for women trying to conceive. Dekel and a research team that includes Drs. Yael Kalma and Yulia Gnainsky, working in col...Human and chimp genomes reveal new twist on origin of species
...zation before a final separation. "The study gave unexpected results about how we separated from our closest relatives, the chimpanzees. We found that the population structure that existed around the time of human-chimpanzee speciation was unlike any modern ape population. Something very unusual happened at th...Using satellite observations to study photosynthetic trends in northern circumpolar high latitudes
...ight be responding to climate change in previously unexpected ways. This research is highlighted in the current issue of Earth Interactions. According to Andrew Bunn, lead author of the paper and a post-doctoral fellow at the Center, "This research suggests that the high latitudes might not be responding to cli...A dichotomy in migration patterns found for sea turtles in east Atlantic
...ands off of West Africa, researchers have found an unexpected dichotomy in turtle behavior: While some turtles leave the nesting grounds to feed on bottom-dwelling sea life in shallow coastal waters, others leave Cape Verde to roam the much deeper open ocean along the African coast and exhibit a distinct feedin...Survival of the selfless - scientists find cheats don't always prosper
...roup can resist invasion by exploitative cheats is unexpected and gives us greater insight into how cooperation evolves. This is important because we live in a world in which cooperations exists at every level, from genes working together to build functioning individuals to individuals forming societies." The r...For Stanford scientists, RNAi gene therapy takes two steps forward, one step back
...and postdoctoral fellow Dirk Grimm, PhD, report an unexpected side effect of another type of RNAi gene therapy not on trial - mice in that study suffered liver toxicity from the treatment and some died. Despite that initial result, to be published in the May 25 issue of Nature, Kay and Grimm went on to find a w...ACS News Service weekly press package - May 30, 2006
...n La Jolla, Calif., previously made the completely unexpected discovery that ozone may be produced in the body. Ozone is a high-energy form of oxygen most familiar as an air pollutant. That research showed that ozone can cause pathological changes in cholesterol and other molecules in the body. The changes prod...Chemists forge a new form of iron
...national team of chemists has discovered a new and unexpected form of iron, a finding that adds to the fundament...very of the new iron compound, Berry says, was the unexpected consequence of studying an iron IV compound. "During the course of our studies, we found that it was...UBC researchers find stroke death channel
...ed to prevent brain cell death. "Our discovery was unexpected we're now going to change channels and pursue a completely different research direction," says MacVicar, Canada Research Chair in Neuroscience. "This finding offers new possibilities for stroke therapies and reinforces the value of investing in basi...Diabetes research takes wing thanks to long-lived fruit fly
...University of Rochester has led scientists down an unexpected new path in the fight against diabetes. The mutant fly is serving as a portal for understanding the factors that determine how nutrition and stress set the foundation for metabolic syndrome and diabetes, why diabetes occurs more frequently as people ......t turn out to either not work in humans or to have unexpected toxicity." A public Canadian company called Transition Therapeutics has regulatory approval for clinical trials of scyllo-inositol in humans with Alzheimer's disease and started them about a week ago. St George-Hyslop has a small financial interest i...