- Nitric oxide and peroxynitrite have different antiviral effects against hantavirus replication and free mature virions. Klingstr??m, J., Akerstr??m, S., Hardestam, J., Stoltz, M., Simon, M., Falk, K.I., Mirazimi, A., Rottenberg, M., Lundkvist, A. Eur. J. Immunol. (2006)