Calorie restriction leads to some brain benefits but not others in mice
...tion and flexibility, like quickly climbing down a pole and hanging upside down from a screen. Old animals fed normal diets were significantly worse at these tasks. But calorie restriction had almost no effect on several drills used to measure pure cognitive performance. In one test of spatial learning an...Needling chromosomes yields insights into cell division
...r, then one replicated chromatid can attach to one pole and the other to the opposite pole. But if they ar...nd often both sister chromatids can go to the same pole rather than to opposite poles. This creates chromosome imbalances that can lead to cancer or chromos...Pitt scientists study how cancer cells get out of control
...t not always--the spindles will have more than one pole and cell division won't work correctly, leading to the swapping of genetic material, uncontrolled cell division, and the formation of tumors. Why this doesn't always happen when there are too many centrosomes was the focus of the Pitt researchers' i...A bug's life: aging and death in E. coli
...middle. Each resultant cell inherits an old end or pole and a new pole, which contain slightly different c...l. At the next division, one cell inherits the old pole again (plus a brand new pole), while the other cell inherits a not-quite-so-old pole and a new pole....NJIT expert recommends 16 easy, affordable ways to make homes safer for people with disabilities
...to get a wheelchair through the door. Lower closet pole and shelves: It's easier to access clothing if the poles and shelves are within easy reach. Keep washer and dryers on the main level: A good idea to keep in mind if you are building a new property. Get rid of throw rugs: "At times throw ru...Rockefeller researchers show evidence of asymmetric cell division in mammalian skin
...scuteable and Pins form a complex that anchors one pole of the machinery that drives division to the top, or apical, side of the cell, leaving the other pole at the base of the cell. This defines the axis of the division plane. Lechler found the mammalian eq...Salk scientists get to the root of plant cell fate
... know how a plant can set aside a root and a shoot pole during embryogenesis and keep these functions separate," Long says. The researchers found that the TOPLESS gene encodes a protein (TOPLESS) that is a transcriptional co-repressor. In plants and animals, co-repressors regulate gene expression by inhib...Cassini's Visual and Infrared Mapping Spectrometer detects vast polar ethane cloud on Titan
...temperatures are cool enough, snowing on the north pole right now. When the seasons switch, we expect ethane to condense at the south pole during its winter," Griffith said. If polar conditions are as cool as predictions say, ethane could ...The power of one: A simpler, cheaper method for cell fusion
...a miniscule gap that channels electricity from one pole to the other. Passing through this narrow section, cells are subjected to a strong electrical field that causes them to become destabilized and fuse together. In one of electrofusion's applications, scientists can fuse antibody-producing cells from...Wanderlust -- deep-sea fauna under Antarctic ice shelf
...egard to our confirmatory findings on the opposite pole Antarctica. This species, its bigger "sister" Scotoplanes globosa and other relatives according to their feeding mode are referred to as grazers. Myriads of single-celled algae that sink down to the seafloor are literally grazed by herds of sea cuc...A thesis of the UGR analyses more than 20-million-year-old vegetation to study climatic evolution
...lion years ago there were glaciations in the south pole that changed the ruling subtropical climate into warm and transformed the characteristic vegetation of this area. A result that can be "vitally important to determine if the present climatic change is due to a natural period or, on the contrary, it i...World's first X-ray free electron laser is on course to completion
... strongback. The strongback secures the magnet and pole assemblies, counteracts the very high magnetic forces between the upper and lower magnetic arrays, and is critical in determining the thermal and mechanical stability of the undulator. Precision and stability requirements for the LCLS devices far exc......the erosion of the water-ice deposits at the South pole was blocked as soon as layers of CO2 ice were deposited on the water-ice and trapped it, as OMEGA has observed them....