title: A polymerase chain reaction (PCR) investigation of oral verrucae which contain HPV types 2 and 57 by in situ hybridization.
abstract: The polymerase chain reaction (PCR) and direct DNA sequencing have been used to identify strain variants of HPV types 2a/57 in formalin-fixed sections of human oral verrucae, where the virus had previously been detected by both immunofluorescence and in situ hybridization. By employing type-specific and type-common PCR primers we show that these lesions contain a mixture of viral DNAs which vary by up to 27% in DNA sequence, in a region where the variation between HPV types 2a and 57 is only 4%. The extra discriminatory power of fluorescent sequencing indicates that the lesions may also contain wild-type HPV2a/57 DNA which could provide a helper function for defective viral DNA molecules or indicate a mosaic origin for the lesions.
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D017931:DNA Primers; D015344:DNA Probes, HPV; D004279:DNA, Viral / Q000235:genetics; D006801:Humans; D017403:In Situ Hybridization; D008969:Molecular Sequence Data; D009059:Mouth Diseases / Q000821:virology*; D027383:Papillomaviridae / Q000145:classification* / Q000235:genetics; D016612:Paraffin Embedding; D016133:Polymerase Chain Reaction / Q000379:methods; D012680:Sensitivity and Specificity; D016415:Sequence Alignment; D017422:Sequence Analysis, DNA; D014860:Warts / Q000821:virology*
chemical_list: D017931:DNA Primers; D015344:DNA Probes, HPV; D004279:DNA, Viral