The result showed that within 40 weeks, there were atypical hyperplasia (5, 6, 5, 4 cases separately); carcinoma in situ (3, 1, 1, 1 cases separately); infiltrating carcinoma (1 case in large dose serial DNP and PMA administered group).

• 在40周内，分别见不典型性增生及异型鳞状化生5、6、6及7例次，原位癌依次为3、1、1及1例，而大剂量DNP＋PMA组及低剂量多次给药组各诱发浸润癌一例。