A very small porcine virus with circular single-stranded DNA

  title={A very small porcine virus with circular single-stranded DNA},
  author={Ilse Tischer and Hans A.J. Gelderblom and Wolfgang Vettermann and M. A. Koch},
It was reported previously that cultures of the porcine PK-15 cell line (ATCC-CCL31) were chronically infected with a small virus, supposedly containing RNA1. No gross cytopathic effect was seen in these cultures. During the search for an in vitro model of persistent virus infections the agent was studied in more detail. These studies showed the virus to have a diameter of 17 nm, and to contain a covalently closed circular single-stranded DNA with a molecular weight of 0.58 × 106 and a main… CONTINUE READING
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