DOUGLAS FARMER, SENIOR EDITOR [email protected]A group of researchers has demonstrated that assembling a network of tiny, approximately 1.5-mm3 blocks with the aid of optical technology can be an effective way to accelerate healing in tissue and bone. Using Lego blocks as inspiration, they even learned that filling these blocks with different materials could direct specific healing to where it was needed most. The blocks were essentially used as a scaffolding in an experiment with laboratory rats. 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