Genotyping of Human Papillomavirus in Cervical Squamous Intraepithelial Lesions in Mexican Women.

Approximately 40 genotypes of the human papillomavirus (HPV) have been identified in cervical mucosa. In particular, HPV-16 and HPV-18 have been associated with cervical neoplasia. Squamous intraepithelial lesions (SILs) are precursors of cervical cancer.