Figure 2

Parvovirus B19 diagnostic (120-bp fragment; Accession No. AB030694). PCR products after nested PCR were subjected to electrophoresis on an 8% polyacrylamide gel, and DNA fragments were detected by silver staining. Lanes: 1 and 6, 50-bp ladder; 2, negative control; 3, positive control; 4, extraction control; 5, Case 7.