Screening for Cervical Cancer Precursors to Prevent Invasive Disease -- Methods of Obtaining and Preparing Cervical Tissue for Histological Examination -- Immunohistochemistry and In Situ Hybridization -- Normal Histology, Regeneration, and Repair -- Vestigial and Heterotopic Tissues -- Hormonally Induced Changes -- Inflammatory Lesions -- Benign Tumors -- Premalignant Lesions -- Malignant Tumors.