Elusive HIV shape change revealed; Key clue to how virus infects cells
...lots of computational work, to get that picture to sharpen up enough to get an answer." One of the lab's first steps will be to determine which shape of gp120 ?bound to the CD4 receptor, or unbound ?is recognized by a person's antibodies. gp120's shape change is an important "escape mechanism" for HIV, allo...Chernobyl: The true scale of the accident
...ls can justify. The report identifies the need to sharpen priorities and streamline the programs to target the most needy, noting that reallocating resources is likely to face "strong resistance from vested interests". One suggestion calls for a "buy out" of the entitlement to benefits in return for lump su...Eating chocolate could help to sharpen up the mind and give a short-term boost to cognitive skills, a University of Nottingham expert has found. A study led by Professor Ian Macdonald found that consumption of a cocoa drink rich in flavanols ?a key ingredient of dark chocolate ?boosts bl...