Why do some people get bitten by mosquitoes more than others?
...e other cows. When these individuals were moved to another field the number of flies afflicting the herd increased. James, working in collaboration with Professor Jenny Mordue at the University of Aberdeen, tested the behavioural reaction of yellow fever mosquitoes to the odour of the volunteers. James said...Mouse brain cells rapidly recover after Alzheimer's plaques are cleared
... changes with plaque development, Brendza injected another dye, developed by scientists at the University of Pittsburgh, that temporarily sticks to amyloid. He showed that as the plaques appeared, nearby branches of nerve cells developed bumps and swellings. "If you look under the electron microscope at thes...Sinking coastlines may precede large subduction zone quakes
...o pre-quake levels. Because plates thrust over one another in these zones, the quakes are referred to as megathrust earthquakes. They often generate tsunamis. "What we think happens is, two to five years before a quake, the plate boundary starts to drag down ever so slightly before it fractures," said David...New evidence indicates biggest extinction wasn't caused by asteroid or comet
...n extinction rate at the boundary that then lasted another 5 million years. The scientists said they found nothing in the Karoo that would indicate a body such as an asteroid hit around the time of the extinction, though they looked specifically for impact clays or material ejected from a crater left by suc...Anti-bacterial additive widespread in U.S. waterways
...onment correlated strongly with that of triclosan, another commonly used antimicrobial chemical that has been studied in much greater detail because it is more easily detectable. Using an empirical model and published data on the environmental occurrence of triclosan, the researchers predictedtriclocarban c...Lack of enzyme turns fat cells into fat burners
...come obese and develop type 2 diabetes. "This adds another tissue or organ that helps out in the process of energy maintenance," said Wakil. "ACC2 is potentially a key enzyme in the regulation of weight, obesity, and related problems." Wakil and his colleagues studied the oxidation of fatty acid and glucose ...Scientists find missing link between whale and its closest relative, the hippo
...e another's closest relatives. "This work provides another important step for the reconciliation between molecular- and morphology-based phylogenies, and indicates new tracks for research on emergence of cetaceans," Boisserie said. Boisserie became a hippo specialist while digging with Brunet for early human...Interaction between stem cells and their niches key to differentiation
...more copies of themselves or to differentiate into another cell type, said the researchers. Germline stem cel...tional copies of themselves or differentiated into another cell type known as a cystoblast, which eventually become mature eggs. "We found that stem cells beha...Theory on evolution of essential genes is overturned by new finding
... simple genetic makeup of the fruit fly, it is yet another example of where Drosophila can help us understand important genetic processes throughout the animal kingdom, including humans."...Mayo Clinic researchers discover new kind of heart failure gene
... With this new study, we see that heart failure is another important manifestation of this genetic defect." A... The new study is important because it establishes another mechanism for heart failure involving the regulation of sodium ion flow, not structural protein defe...Choosing where to look and changing your mind
...een actions and changing from one choice to select another one. The new work utilizes functional magnetic resonance imaging, or fMRI, to assess areas of neuronal activity in precise areas of the brain during different tasks related to choice. The researchers asked healthy volunteers in a magnetic resonance s...Brown scientists uncover inner workings of rare eye cells
...of millions of eyes cells, ipRGCs are different in another way: They have a direct link to brain, sending a m...g we learn is important." Berson and his team made another intriguing finding: The biochemical cascade sparked by melanopsin is closer to that of eye cells in ...Novel approach yields predictions validated by experiments
...advanced analysis technology. The work represents another step toward modeling complex biological systems accurately enough to make useful predictions."Our research went beyond describing a one-way street," said Professor Eberhard Voit of the Georgia Tech/Emory University Wallace H. Coulter Department of Bi...Quantum dots research leads to new knowledge about protein binding in plants
...tip. This protein plays a critical role along with another protein (chemocyanin) in guiding sperm-laden pollen tubes to the eggs found in ovules. Applying nanoparticles for imaging the protein localization revealed information that could not be observed previously by conventional imaging techniques. This st...Protein stops growth of brain tumor, OHSU study shows
... is a specific inhibitor," Clinton noted. "This is another step in proving it doesn't kill all cells, and the more specific and tailored it is to a particular molecular profile, the less likely you're going to have a lot of side effects."...Scientists ID molecular 'switch' in liver that triggers harmful effects of saturated and trans fats
... the "bad" form of cholesterol) and triglycerides another fatty substance that are secreted into the bloodstream. PGC-1beta belongs to a specific family of co-activators, proteins that interact with other proteins to turn genes on and off and adjust their activity, like a dimmer switch that varies the brig...Despite causes of lupus proving complex, critical 'checkpoint' suggesting new therapy is revealed
...ions, one in the January 28 edition of Science and another in January's Nature Immunology. "Our Science publi...ing the inhibitory Fc receptor on dendritic cells, another immune system cell type, may play a similar role in other illnesses. We may reach a convergence of u...A new mechanism of regulating RNA degradation
... these RNAs. Significantly, altering the amount of another NMD factor didn't affect these RNAs. Thus, Staufen1 and Upf1, together, degrade RNAs by a previously undescribed mechanism, which the team called Staufen1-mediated degradation (SMD). Preliminary results suggest that SMD activity affects numerous tra...Steroid discoveries could add bulk to crop harvests
...he cell membrane. Their experiments indicated that another protein, a kinase called BIN2, appeared to act neg...The experiments also revealed that BES1 joins with another transcription factor called BIM1 to activate genes known to be regulated by steroid hormones. "So, ...National survey shows Americans are in the dark regarding genetically modified foods
... the transfer of genes from one plant or animal to another with the purpose of expressing a desired trait, such as pest resistance or increased productivity. Estimates suggest that as much as 80% of processed foods in the United States contain a component from a genetically modified crop, such as corn starc...