Figure 1: Agarose gel electrophoresis of PCR reaction products. (A) Representative agarose gel with PCR products of human beta-globin (280bp). (B) 150 bp PCR product using GP5+/GP6+ common primer for HPV. (C) PCR products of HPV-18 using specific primers FHPV-18/RHPV18 (217bp). (D) PCR products of HPV-16 using specific primer FHPV-16/RHPV16 (321bp). M, 100 bp molecular weight marker, (+) positive control: in (A) human DNA, in (B and C) Ca Ski cells DNA, in (D) HeLa cells DNA. N, negative control without DNA. Numbers 1 to 3 correspond to PCR products using DNA from human cervical samples.