Figure 1.
Schematic representation of human parvovirus B19 genome and nested PCR amplification of parvovirus B19 DNA sequences in papillary thyroid carcinomas, (A) NS1, VP1, and VP2 coding regions of the B19 genome and the location and nucleotide positions of the primers for nested PCR amplification. (B) Representative agarose gel electrophoresis of nested PCR products. Lane 1: 100 bp DNA ladder; lane 2: positive control; lane 3: negative control; lanes 4, 5 and 6: positive samples. The amplicons were approximately 173 bp in size. Lane 7: negative sample.