This mathematical and computational model predicts the full course of villi development from the dimensions and elasticity of embryonic gut’s tissue layers. Here, ridges form in the gut lining and buckle to form zigzags. Later, the zigzags twist to form bumps that would then grow into villi. Credit: L. Mahadevan/Science.
Learn more: wyss.harvard.edu/how-the-guts-fingers-form/