%0 Journal Article %1 Gratz2011 %A Gratz, M S %A Suezer, Y %A Kremer, M %A Volz, A %A Majzoub, M %A Hanschmann, K M %A Kalinke, U %A Schwantes, A %A Sutter, G %D 2011 %J J Virol %K kalinke %N 7 %P 3557-3569 %T N1L is an ectromelia virus virulence factor and essential for in vivo spread upon respiratory infection. %V 85