background: human papillomavirus (hpv) is responsible for the development of cervical neoplasia. infection with human papillomavirus type 16 (hpv-16) is a major risk factor for the development of cervical cancer. the virus encodes three oncoproteins (e5, e6 and e7), of which, the e7 oncoprotein is the major protein involved in cell immortalization and transformation of the infected cells. the ...