AR and cervical intraepithelial neoplasia: One study demonstrated the expression of AR by immunohistochemistry in 100% (30/30) of normal epithelium, 100% (30/30) of low-grade cervical intraepithelial neoplasia, and 63% (19/23) of high-grade cervical intraepithelial neoplasia, as well as in 23% (3/13) of invasive squamous cell carcinoma.