Fig. 5
Electrophoresis to assess human papillomaviruses (HPV) status. The bands in lane 3 represent positive reactivity for HPV-16 in case 1. The band in lane 4 represents negative reactivity for HPV in adjacent normal mucosal tissues of case 1. The bands in lane 5 represent positive reactivity for HPV-18 in case 2. Lane 2 contains an extract from a control cell line that is known to be HPV-16-positive (UMSCC-47; a gift from Dr. TE Carey). The DNA size marker is located in lane 1. The water blank is in lane 6