For the future: polymer-drug systems.
D003692:Delayed-Action Preparations; D004343:Drug Implants; D006801:Humans; D004364:Pharmaceutical Preparations / Q000008:administration & dosage*; D011108:Polymers
D003692:Delayed-Action Preparations; D004343:Drug Implants; D004364:Pharmaceutical Preparations; D011108:Polymers