The document discusses Pap smear testing for cervical cancer screening. It provides details on: 1) The history and effectiveness of Pap smears in detecting precancerous lesions and cervical cancer early. Regular Pap smear screening can prevent up to 70% of cervical cancers. 2) Guidelines for Pap smear screening including initial screening at age 21 or within 3 years of becoming sexually active, screening intervals of every 3 years for ages 30-70, and ending screening at age 70. 3) Limitations of conventional Pap smears including low sensitivity and false negatives, and how liquid-based cytology techniques can improve results.