| 摘要 |
Certain embodiments of the invention relate to the use of small particles in biological systems, including the delivery of biologically active agents. Some embodiments involve using a collection of particles comprising an agent, a surfactant molecule having an HLB value of less than about 6.0 units, and a polymer soluble in aqueous solution, wherein the collection of particles has an average diameter of less than about 200 nanometers, wherein the agent is a protein, carbohydrate, polypeptide, adjuvant, nucleic acid encoding a protein, visualization agent, and/or a marker.
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