a, Revisits of the same β-catenin outgrowth. b, c, β-Catenin/Wls outgrowth phenotypes (mean ± s.e.m., number of outgrowths = 168 Wls+/+ in three mice; n = 66 Wlsfl/+ in two mice; n = 233 Wlsfl/fl in four mice). d, Schematic of β-catenin and CDKN1b induction (top) and outgrowth revisits (bottom). e, Quantification of growth and regression (mean ± s.e.m., n = 70 outgrowths in four β-catenin/CDKN1b mice and n = 126 in four β-catenin mice). f, Dilated follicular cyst with stratified squamous epithelial lining (black arrow head) displaying keratinohyalin granules and dyskeratotic keratinocytes from β-catenin/CDKN1b. Scale bars, 50 µm.