In performing this research and analysis of the 1918 virus, we don't have any infectious disease risk of escape of live 1918 virus at all. Indeed, the sample has been fixed in chemical formaldehyde and processed for pathology which would destroy all viruses, including influenza virus. So there's no way that we could recover live virus. The genes of the virus, as I said, are chewed up into little tiny pieces. So it's absolutely clear that there's no live virus, there's no infectious risk at all.