Fig. 2From: Genetic variant in CXCL12 gene raises susceptibility to HPV infection and squamous intraepithelial lesions development: a case-control studyElectrophoretic profile of amplified CXCL12 fragment. 10% polyacrylamide gel stained with silver nitrate. M, 100 bp marker ladder; 1, negative control; Columns 2 to 5, samples showing CXCL12 DNA amplificationBack to article page