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Band analysis: M lane: 100-bp deoxyribonucleic acid marker, lane 1: HPV 16-positive control (457 bp), lane 2: Human papilloma virus-negative control, lane 3: HPV 16-positive specimen, lane 4: HPV 18-positive control (322 bp), lane 5: HPV 16-negative specimen, lane 6: HPV 18-positive specimen
