Tissue-Specific Effects of Reduced β-catenin Expression on Adenomatous Polyposis Coli Mutation-Instigated Tumorigenesis in Mouse Colon and Ovarian Epithelium. oleh Ying Feng, Naoya Sakamoto, Rong Wu, Jie-Yu Liu, Alexandra Wiese, Maranne E Green, Megan Green, Aytekin Akyol, Badal C Roy, Yali Zhai, Kathleen R Cho, Eric R Fearon