This short video explains the structure of an intestinal crypt along with the different cell types. We also discuss the role of APC gene and associated mutations that can lead to carcinoma. 0:00 introduction 0:21 intestinal villi 0:51 stem cells and paneth cells 1:05 transit amplifying cells 1:19 goblet cells and enterocytes 1:38 outmigration and cell death 2:25 APC function