How to Make Human Hearts, Lungs, and Guts Using Only Paper Using white card stock, scissors and some glue, Horst Kiechle created an anatomically-correct model of the human torso with removable organs.

The bioengineered model uses a nanofiber scaffold tissue that is seeded with human heart cells. Acting as a 3D template, the scaffold guides the heart cells and their assembly into ventricle chambers, ...