Fig 1.

Time scale of the SIRV2 infection cycle in the Sulfolobus host cell, indicating time points of RNA isolation (white dots) in hours postinfection. Above the time scales are shown electron micrographs of thin sections of representative SIRV2-infected S. islandicus cells at each stage of infection. During the first hours after infection (t < 3 hpi), cells appear similar to uninfected control cells. Later, bundles of virions assemble in the cytoplasm (t = 3 to 6 hpi), followed by VAP formation (t = 6 to 9 hpi) and eventually opening of the VAPs and release of the virions (t = 10 to 12 hpi). Bars, 500 nm.