Dr. Ophir Klein is the inaugural Executive Director of Cedars-Sinai Guerin Children's and the David and Meredith Kaplan Distinguished Chair in Children's Health. He discusses his work on intestinal epithelium regeneration, which he will present at the “Tissue Fibrosis and Repair: Mechanism, Human Disease, and Therapies” Keystone Symposium taking place from June 12-16th in Keystone, Colorado. He also talks about mechanisms of tooth development, analyzing three-dimensional facial images to diagnose genetic syndromes, and how parasitic infections affect the intestinal stem cell niche.