Microparticles formed by mixing a macromolecule with a polymer at a pH near the isoelectric point of the macromolecule and incubating the mixture in the presence of an energy source for a predetermined length of time. The microparticles are composed of homogeneously distributed, intertwined macromolecule...http://www.google.fr/patents/US5981719?utm_source=gb-gplus-shareBrevet US5981719 - Macromolecular microparticles and methods of production and use
Macromolecular microparticles and methods of production and use
