The carrier drug microsphere (or microcapsule) is wry important for controlled - release drug nowdays.The materials and preparation methods are the key for the control release system.

• 在现代给药系统中,微粒(微球与微胶囊)工程已占有非常重要的地位,对于控制释放系统而言,重要的是载体材料及制作方法的选择。