Bioactive agent is encapsulated in a polymer microparticle in a (water-in-oil)-in-water emulsion-based method, and using a solvent that-comprises ethyl acetate. Also described are microparticles comprising low inherent viscosity (i.v.) PLG, some with i.v. less than 0.5 dl/g, and methods for their preparation....http://www.google.es/patents/US6406719?utm_source=gb-gplus-sharePatente US6406719 - Encapsulation of bioactive agents
