| abstract |
Small particles are disclosed for use in biological systems, including the delivery of biologically active agents to cells or tissues using nanoparticles of less than about 200 nm in approximate diameter. A particle having a bioactive component, a surfactant molecule, a biocompatible polymer, and a cell recognition component, wherein the cell recognition component has a binding affinity for a cell recognition target are also disclosed. Compositions and methods of use are also set forth. |