RETRACTION
Volume 84, no. 21, p. 11385–11394, 2010, https://doi.org/10.1128/JVI.01121-10. We have been alerted that some Western blot strips in Fig. 3A are more similar than expected upon retrospective inspection under magnification, and we immediately informed the journal. Since 12 years have passed since publication, an investigation with original research materials is impossible. Therefore, we now retract this paper.