MMicrospheres and Microcapsules in BiotechnologyMicrospheres and Microcapsules in Biotechnologyde Guanghui Ma, Zhi-Guo SuMateriasBiotechnologyMicrospheresArtificial cellsBioengineeringMicrospheres (Pharmacy)Cell EngineeringDrug CompoundingDrug Delivery SystemsBiotechnologieCellules artificielles