Word: nucleus
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...into groups with similar properties and left some spaces blank for those whose existence he could not yet prove. In 1913 physicist Henry Moseley's experiments showed definitively that the order was dependent not on atomic weight but on atomic number--the number of protons in an atom's nucleus...
...Zhigang C. Wang, a professor of surgery at the Medical School, discovered two genes located on a chromosome whose presence amplified resistance to anthracycline drugs. The pair of genes, found in 20 percent of the samples, inhibits cancerous cell death and prevents the chemotherapy drugs from reaching the cell nucleus...
Maze's research focused on a particular protein called G9a that is associated with cocaine-related changes in the nucleus accumbens, a brain region essential for the experience of desire, pleasure and drive. The role of the protein appears to be to shut down genes that shouldn't be on. One-time use of cocaine increases levels of G9a. But repeated use works the other way, suppressing the protein and reducing its overall control of gene activation. Without enough G9a, those overactive genes cause brain cells to generate more dendritic spines, which are the parts of cells that make connections...
...learning. But in the case of addiction, that may involve learning to connect a place or a person with the desire for more drugs. Maze showed that even after a week of abstinence, mice given a new dose of cocaine still had elevated levels of gene activation in the nucleus accumbens, meaning G9a levels were still low. It is not known how long these changes can last. Maze also showed that when he intervened and raised G9a levels, the mice were less attracted to cocaine...
Despite losing its nucleus of Hasheem Thabeet, Jeff Adrien, and A.J. Price from last season, the Huskies return an athletic lineup with arguably one of the best backcourts in the nation...