An ethidium bromide-stained 2% agarose gel for gene amplification, lane 1: MW, lanes 2–4: normal cervical tissue samples, lanes 5–9: CIN cases, lanes 10–14: cases of invasive squamous cell carcinoma

<p><b>Copyright information:</b></p><p>Taken from "The possible role of cell cycle regulators in multistep process of HPV-associated cervical carcinoma"</p><p>BMC Clinical Pathology 2007;7():4-4.</p><p>Published online 24 May 2007</p><p>PMCID:PMC1894982.</p><p></p> Lanes 10, 13, 14 show gene amplification