Word: infectivity
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...recent years, Wiley studied how the proteins on the surface of a virus allow the virus to fuse with a cell and infect...
...last papers he published before he disappeared, Wiley presented the structures of two types of a protein that allow the flu virus to infect a target cell. This work followed up on work he had continued since his early years at Harvard...
...paper, published in the Sept. 15 issue of Proceedings of the National Academy of Sciences, suggested how strains of influenza that arise in animals can eventually gain the ability to infect humans...
...government microbiologist, speaking on condition of anonymity, told the Associated Press the letter sent to Vermont Senator Patrick Leahy contained "billions" of anthrax spores. It generally takes 8,000 to 10,000 spores to infect someone with the inhaled form of the disease...
...hijackers happened to ensure the destruction of their host, but if they are virulent enough to spread to the brains of others prepared by their local conditions to provide good homes to their ilk, this is no matter threatening their survival. Like viral particles of HIV that infect 20 others for every host they happen to kill, the suicidal terrorist meme is likely spreading in the face of these wanton acts of destruction...