Exploding gel delivers vaccine in controlled bursts

 作者:宾巩蚕     |      日期:2019-03-02 03:02:11
By Celeste Biever in Boston HOLY exploding micro-balls: a gel that swells on contact with water is being used to make drug capsules that burst at precisely controlled times. The capsules could be loaded with different vaccines and designed to explode in stages, allowing doctors to deliver a whole course of separate doses in a single shot, says Stefaan De Smedt of Ghent University in Belgium, who presented the work at the Materials Research Society meeting in Boston last week. This would be useful in the developing world, where administering vaccines that require multiple injections, such as hepatitis B,