The bio-ink has all the nutrients and also the gel-like material that the cells need to live, and it also holds them in place. Todd Goldstein More Quotes by Todd Goldstein More Quotes From Todd Goldstein The Fin attaches to a standard prosthetic, allowing the amputee to enter and exit the water without changing prosthetics. Todd Goldstein health-news If this [3D printed trachea ring] is the repair for the damage, we can come and put it in place, and it'll be living and taking care of the part that we took out. Todd Goldstein health