New body parts at the stroke of a laser pen

 作者:国呛詹     |      日期:2019-03-07 01:06:01
By Catherine Zandonella in San Francisco IF YOU want to create artificial organs or a sophisticated biosensor, Bradley Ringeisen has just the thing. Think of it as a laser-powered pen that uses biological cells for its ink supply. There are several ways to deposit thin layers of cells needed to build artificial organs. But arranging the materials in precise patterns is tough. So Ringeisen, a physical chemist at the Naval Research Laboratory in Washington DC,