| http://www.w3.org/ns/prov#value | - The removal of the organic solvent in the final step is preferably by means of evaporation. [0045] Polyanhydride microparticles may be filtered by standard means, such as through glass wool, synthetic fiber, cellulosic or other natural fibers, between the high shear dispersing process and the microfluidizer or ultrasonification process.
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