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Detection of porcine parvovirus 2 (PPV2) by in situ hybridization (ISH ×200). The ISH signal of PPV2 was markedly reduced in formalin-fixed paraffin-embedded (FFPE) sections treated with DNase (A) compared to untreated FFPE sections (C). There was no obvious difference between the FFPE sections treated with RNase (B) and the untreated FFPE sections (C).
