Scientists are 3D printing miniature human organs to test coronavirus drugs

The team is constructing miniature lungs and colons — two organs particularly affected by the coronavirus — then sending them overnight by courier for testing at a biosafety lab at George Mason University in Fairfax, Va. While they initially created some of the so-called organoids by hand using a pipette, they are beginning to print these at scale for research as the pandemic continues to surge.

On How It Works:

Another important part of the process is constructing blood vessels as part of the printing. Pankaj Karande, an assistant professor of chemical and biological engineering at Rensselaer Polytechnic Institute, has been experimenting with skin printing since 2014 and recently had success in this step.

Using a cell known as a fibroblast, which helps with growth, along with collagen, as a scaffold, researchers at the institute printed the epidermis and dermis, the first two layers of skin. (The hypodermis is the third layer.) “It turns out the skin cells don’t mind being sheared,” Dr. Karande said, and they could ultimately survive.