28 September 2016
Vol 8, Issue 358

About The Cover

Cover image expansion

ONLINE COVER A Better Bone Graft. An artificial "bone" material (dark blue and purple area near the top of the image) implanted in mice stimulates and supports regrowth of natural bone (the lower half of the image), complete with blood vessels (round red objects are red blood cells) (H&E stain). This so-called hyperelastic "bone" can be made quickly—3D printed into custom shapes and readily deployed in the operating room. The properties are superior to those of current materials. [CREDIT: JAKUS ET AL./SCIENCE TRANSLATIONAL MEDICINE]