Compositions and methods are provided that are useful for the delivery, including transdermal delivery, of biologically active agents, including nucleic acids and therapeutic proteins including insulin, larger therapeutic proteins such as botulinum toxin and other biologically active agents such as a therapeutic protein which does not therapeutically alter blood glucose levels, a therapeutic nucleic acid-based agent, a non-protein non-nucleic acid therapeutic agent such as an antifungal agent or alternately an agent for immunization. The compositions can be prepared with components useful for targeting the delivery of the compositions as well as imaging components.
