abstract |
A composition for delivering a biologically active agent to a host. Thencomposition comprises a product including a biologically active agentnencapsulated in a matrix comprising a copolymer, of a polyalkylene glycolnand an aromatic polyester, such as a polyethylene glycol terephthalate/polybutylenenterephthalate copolymer. The polyether-ester copolymernprotects the biologically active agent (including proteins, peptides, andnsmall drug molecules) from degradation or denaturation and provides andnessentially zero-order release. |