Week 16 COs were sub-fractionated into a cytoplasmic (C) and nuclear (N) fractions. The experiment was run twice with a total of 2 WT organoids and 4 KOs organoids (2 for each KO line). KAP-1 marks the nucleus and HSP90 marks the cytoplasm. The numbers at the bottom are a quantification of the nuclear fraction of β-catenin band intensities normalized to the cytosolic fraction [β-C (N/C)]. 