Flu viruses must be able to pick a very specific type of lock before entering human respiratory cells. The discovery may help scientists better monitor changes in the H5N1 bird flu virus that could trigger a deadly pandemic in humans. And it may lead to better ways to fight it. The scientists found that a flu virus must be able to attach itself to an umbrella-shaped receptor coating human respiratory cells before it can infect cells in the upper airways.... http://www.reuters.com/article/heal...edType=RSS&feedName=healthNews&rpc=22&sp=true Interesting...
